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Repeated sequence (DNA)

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interfering RNA (siRNA), chromatin remodelers, histone variants, and other epigenetic factors. However, TEs play a wide variety of important biological functions. When TEs are introduced into a new host, such as from a virus, they increase genetic diversity. In some cases, host organisms find new functions for the proteins which arise from expressing TEs in an evolutionary process called TE exaptation. Recent research also suggests that TEs serve to maintain higher-order chromatin structure and 3D genome organization. Furthermore, TEs contribute to regulating the expression of other genes by serving as distal
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that can stably incorporate tandem repeats up to 30kb. Expression of repeats is prohibited by the transcriptional terminators in the vector. The second step involves the use of exonuclease III. The enzyme can delete nucleotide at the 3' end which results in the production of a unidirectional deletion of SSR fragments. Finally, this product which has deleted fragments is multiplied and analyzed with colony PCR. The sequence is then built by an ordered sequencing of a set of clones containing different deletions.
117:. Discoveries of deleterious repetitive DNA-related diseases stimulated further interest in this area of study. In the 2000s, the data from full eukaryotic genome sequencing enabled the identification of different promoters, enhancers, and regulatory RNAs which are all coded by repetitive regions. Today, the structural and regulatory roles of repetitive DNA sequences remain an active area of research. 189: 228:) are typically 100-300 base pairs and no longer than 600 base pairs. Long-terminal repeat retrotransposons (LTRs) are a third major class of retrotransposons and are characterized by highly repetitive sequences as the ends of the repeat. When a transposable element does not proceed through RNA as an intermediate, it is called a 235:
Transposable elements are estimated to constitute 45% of the human genome. Since uncontrolled propagation of TEs could wreak havoc on the genome, many regulatory mechanisms have evolved to silence their spread, including DNA methylation, histone modifications, non-coding RNAs (ncRNAs) including small
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are repeated sequences which are directly adjacent to each other in the genome. Tandem repeats may vary in the number of nucleotides comprising the repeated sequence, as well as the number of times the sequence repeats. When the repeating sequence is only 2–10 nucleotides long, the repeat is referred
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are identical or similar DNA sequences which are found in different locations throughout the genome. Interspersed repeats are distinguished from tandem repeats in that the repeated sequences are not directly adjacent to each other but instead may be scattered among different chromosomes or far apart
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in eukaryotic organisms. Recombination is when two homologous chromosomes align, break, and rejoin to swap pieces. Recombination is important as a source of genetic diversity, as a mechanism for repairing damaged DNA, and a necessary step in the appropriate segregation of chromosomes in meiosis. The
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is a disorder that presents as muscle weakness and consists of two main types: DM1 and DM2. Both types of myotonic dystrophy are due to expanded DNA sequences. In DM1 the DNA sequence that is expanded is CTG while in DM2 it is CCTG. These two sequences are found on different genes with the expanded
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While some repeated DNA sequences are important for cellular functioning and genome maintenance, other repetitive sequences can be harmful. Many repetitive DNA sequences have been linked to human diseases such as Huntington's disease and Friedreich's ataxia. Some repetitive elements are neutral and
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from short reads simply cannot determine the length of a repetitive part. This issue is particularly serious for microsatellites, which are made of tiny 1-6bp repeat units. Although they are difficult to sequence, these short repeats have great value in DNA fingerprinting and evolutionary studies.
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is a type of ataxia that has an expanded repeat sequence GAA in the frataxin gene. The frataxin gene is responsible for producing the frataxin protein, which is a mitochondrial protein involved in energy production and cellular respiration. The expanded GAA sequence results in the silencing of the
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at the Cold Spring Harbor Symposium. McClintock's work set the stage for the discovery of repeated sequences because transposition, centromere structure, and telomere structure are all possible through repetitive elements, yet this was not fully understood at the time. The term "repeated sequence"
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Bustos. et al. proposed one method of sequencing long stretches of repetitive DNA. The method combines the use of a linear vector for stabilization and exonuclease III for deletion of continuing simple sequence repeats (SSRs) rich regions. First, SSR-rich fragments are cloned into a linear vector
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occur when a nucleotide sequence is repeated in the inverse direction. For example, a direct repeat of "CATCAT" would be another repetition of "CATCAT". In contrast, the inverted repeated would be "ATGATG". When there are no nucleotides separating the inverted repeat, such as "CATCATATGATG", the
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and D. E. Kohne in 1968; they found out that more than half of the eukaryotic genomes were repetitive DNA through their experiments on reassociation of DNA. Although the repetitive DNA sequences were conserved and ubiquitous, their biological role was yet unknown. In the 1990s, more research was
389:. In Huntington's disease the expansion of the trinucleotide sequence CAG encodes for a mutant huntingtin protein with an expanded polyglutamine domain. This domain causes the protein to form aggregates in nerve cells preventing normal cellular function and resulting in neurodegeneration. 184:
are the highly compact regions of chromosomes which join sister chromatids together and also allow the mitotic spindle to attach and separate sister chromatids during cell division. Centromeres are composed of a 177 base pair tandem repeat named the α-satellite repeat. Pericentromeric
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Some repetitive sequences, such as those with structural roles discussed above, play roles necessary for proper biological functioning. Other tandem repeats have deleterious roles which drive diseases. Many other tandem repeats, however, have unknown or poorly understood functions.
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Repeated sequences are categorized into different classes depending on features such as structure, length, location, origin, and mode of multiplication. The disposition of repetitive elements throughout the genome can consist either in directly adjacent arrays called
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Because the gene resides on the X chromosome, females who have two X chromosomes are less effected than males who only have on X chromosome and one Y chromosome because the second X chromosome can compensate for the silencing of the gene on the other X chromosome.
213:(TEs), mobile sequences which can be "cut and pasted" or "copied and pasted" into different places in the genome. TEs were originally called "jumping genes" for their ability to move, yet this term is somewhat misleading as not all TEs are discrete genes. 70:
occurs. However, an abundance of neutral repeats can still influence genome evolution as they accumulate over time. Overall, repeated sequences are an important area of focus because they can provide insight into human diseases and genome evolution.
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heterochromatin, the DNA which surrounds the centromere and is important for structural maintenance, is composed of a mixture of different satellite subfamilies including the α-, β- and γ-satellites as well as HSATII, HSATIII, and sn5 repeats.
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strands. This increase in recombination was attributed to increased intrachromosomal recombinational repair. By this process, mitomycin C damaged DNA in one sequence is repaired using intact information from the other repeated sequence.
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gene. The two genes don't encode for proteins unlike other disorders like Huntington's disease or Fragile X syndrome. It has been shown, however, that there is a link between RNA toxicity and the repeat sequences in DM1 and DM2.
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The prevalence of interspersed elements in the genome has garnered attention for more research on their origins and functions. Some specific interspersed elements have been characterized, such as the Alu repeat and LINE1.
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response and that repeat expansions may impair specific DNA repair pathways. Faulty repair of DNA damages in repeat sequences may cause further expansion of these sequences, thus setting up a vicious cycle of pathology.
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Lebel EG, Masson J, Bogucki A, Paszkowski J. Stress-induced intrachromosomal recombination in plant somatic cells. Proc Natl Acad Sci U S A. 1993 Jan 15;90(2):422-6. doi: 10.1073/pnas.90.2.422. PMID: 11607349; PMCID:
441:). Similar to Huntington's disease, the polyglutamine tail created due to this trinucleotide expansion causes aggregation of proteins, preventing normal cellular function and causing neurodegeneration. 42:
is repetitive, with over two-thirds of the sequence consisting of repetitive elements in humans. Some of these repeated sequences are necessary for maintaining important genome structures such as
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While tandem and interspersed repeats are distinguished based on their location in the genome, direct and inverted repeats are distinguished based on the ordering of the nucleotide bases.
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gene on the X chromosome. This gene produces the RNA-binding protein FMRP. In the case of Fragile X syndrome the repeated sequence makes the gene unstable and therefore silences the gene
220:. Just as tandem repeats are further subcategorized based on the length of the repeating sequence, there are many different types of retrotransposons. Long interspersed nuclear elements ( 762:
Britten RJ, Kohne DE (August 1968). "Repeated sequences in DNA. Hundreds of thousands of copies of DNA sequences have been incorporated into the genomes of higher organisms".
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Pearson CE, Zorbas H, Price GB, Zannis-Hadjopoulos M (October 1996). "Inverted repeats, stem-loops, and cruciforms: significance for initiation of DNA replication".
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Wicker T, Sabot F, Hua-Van A, Bennetzen JL, Capy P, Chalhoub B, et al. (December 2007). "A unified classification system for eukaryotic transposable elements".
62:. Tandem repeats and interspersed repeats are further categorized into subclasses based on the length of the repeated sequence and/or the mode of multiplication. 2339:"How do C9ORF72 repeat expansions cause amyotrophic lateral sclerosis and frontotemporal dementia: can we learn from other noncoding repeat expansion disorders?" 2828: 2853: 2803: 2863: 2985: 2903: 3033: 2893: 2808: 161:. For minisatellites and microsatellites, the number of times the sequence repeats at a single locus can range from twice to hundreds of times. 521:
Many researchers have historically left out repetitive sequences when analyzing and publishing whole genome data due to technical limitations.
385:). This gene is responsible for encoding the protein huntingtin which plays a role in preventing apoptosis, otherwise known as cell death, and 180:
structures which protect the ends of chromosomal DNA from degradation. Repetitive elements are enriched in the middle of chromosomes as well.
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In addition to playing an important role in recombination, tandem repeats also play important structural roles in the genome. For example,
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presence of repeated sequence DNA makes it easier for areas of homology to align, thereby controlling when and where recombination occurs.
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sequence is called a palindromic repeat. Inverted repeats can play structural roles in DNA and RNA by forming stem loops and cruciforms.
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Tandem repeats have a wide variety of biological functions in the genome. For example, minisatellites are often hotspots of meiotic
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Cattaneo E, Zuccato C, Tartari M (December 2005). "Normal huntingtin function: an alternative approach to Huntington's disease".
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gene leads to issues with mitochondrial functioning as a whole and can present phenotypically in patients as difficulty walking.
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Transposable elements that are transcribed into RNA, reverse-transcribed into DNA, then reintegrated into the genome are called
2868: 232:. Other classification systems refer to retrotransposons as "Class I" and DNA transposons as "Class II" transposable elements. 295:
For humans, some repeated DNA sequences are associated with diseases. Specifically, tandem repeat sequences, underlie several
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is a neurodegenerative disorder which is due to the expansion of repeated trinucleotide sequence CAG in
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occur when there is an absence of selection for specific sequences depending on how transposition or
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Not all diseases caused by repeated DNA sequences are trinucleotide repeat diseases. The diseases
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Padeken J, Zeller P, Gasser SM (April 2015). "Repeat DNA in genome organization and stability".
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Shapiro JA, von Sternberg R (May 2005). "Why repetitive DNA is essential to genome function".
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Mazzara PG, Muggeo S, Luoni M, Massimino L, Zaghi M, Valverde PT, et al. (August 2020).
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Joly-Lopez Z, Bureau TE (April 2018). "Exaptation of transposable element coding sequences".
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first intron resulting in loss of function in the frataxin protein. The loss of a functional
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Abugable AA, Morris JL, Palminha NM, Zaksauskaite R, Ray S, El-Khamisy SF (September 2019).
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containing pathogenic CAG repeats often encode proteins that themselves have a role in the
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over successive generations can lead to increasingly severe manifestations of the disease.
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are composed mainly of tandem TTAGGG repeats. These repeats fold into highly organized
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trinucleotide repeat sequences that underlie several types of spinocerebellar ataxias
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Patterns of nucleic acids that occur in multiple copies throughout the genome
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Many repeat sequences are likely to be non-functional, decaying remnants of
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McCLINTOCK B (1951-01-01). "Chromosome organization and genic expression".
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Fragile X repeated CCG DNA sequence in comparison to a normal X chromosome.
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occur when a nucleotide sequence is repeated with the same directionality.
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first observed DNA transposition and illustrated the functions of the
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repeats because of their importance in DNA-based forensics and
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gene, causing RNA toxicity that leads to neurodegeneration.
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are caused by hexanucleotide GGGGCC repeat sequences in the
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Image of the repeated DNA sequence in Huntington's disease.
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between chromosomal repeated sequences in somatic cells of
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is caused by the expansion of the DNA sequence CCG in the
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on the same chromosome. Most interspersed repeats are
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or in repeats dispersed throughout the genome called
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conducted to elucidate the evolutionary dynamics of
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Genetics 297:human disease conditions 253:Homologous recombination 166:homologous recombination 3244:dsDNA satellite virus ( 920:"The case for junk DNA" 492:frontotemporal dementia 427:spinocerebellar ataxias 421:Spinocerebellar ataxias 309:spinocerebellar ataxias 3802:Helper dependent virus 3118:Biological dark matter 3008:Protein tandem repeats 2936:Tandemly arrayed genes 2508:DNA+Repetitious+Region 1223:Nucleic Acids Research 397: 365: 193: 3562:Endogenous retrovirus 3535:Origin of replication 3251:ssDNA satellite virus 3241:ssRNA satellite virus 2245:Nature Communications 1681:Ichiyanagi K (2013). 1513:10.3390/cells10112952 1347:10.1007/s004390050508 708:www.sciencedirect.com 671:10.3390/genes10110896 395: 363: 211:transposable elements 191: 141:for other functions. 127:Transposable elements 3506:Secondary chromosome 3501:Extrachromosomal DNA 3377:Transposable element 2981:Pathogenicity island 2064:10.1038/nrdp.2017.65 1610:10.1266/ggs.15-00016 1047:10.3390/ijms20133365 369:Huntington's disease 356:Huntington's disease 301:Huntington's disease 206:Interspersed repeats 201:Interspersed repeats 60:interspersed repeats 3742:Model lipid bilayer 3584:Interspersed repeat 2407:2016NatSR...636665D 2257:2020NatCo..11.4178M 1335:Chromosome Research 1292:Chromosome Research 881:1980Natur.288..645O 516:techniques because 450:Friedreich's ataxia 445:Friedreich's Ataxia 317:Friedreich's ataxia 121:Types and functions 24:repetitive elements 3052:organic structures 2931:Gene amplification 2395:Scientific Reports 1952:10.1093/hmg/ddw395 1859:10.1242/dmm.031930 1235:10.1093/nar/gki632 466:Myotonic dystrophy 461:Myotonic dystrophy 406:Fragile X syndrome 401:Fragile X syndrome 398: 366: 331:may occur through 313:myotonic dystrophy 305:fragile X syndrome 194: 92:was first used by 81:Barbara McClintock 20:Repeated sequences 3846: 3845: 3787:Non-cellular life 3594: 3593: 3333: 3332: 3306: 3305: 3260:ssRNA satellite ( 3016: 3015: 2917: 2916: 2785: 2784: 2689: 2688: 2578:Repeated sequence 2553:repeated sequence 2416:10.1038/srep36665 1700:10.1266/ggs.88.19 1644:(13): 5245–5256. 1229:(10): 3185–3192. 1106:Wahls WP (1998). 1084:meshb.nlm.nih.gov 875:(5792): 645–646. 770:(3841): 529–540. 556:Intergenic region 518:sequence assembly 258:Nicotiana tabacum 107:molecular ecology 3866: 3523:Gene duplication 3346: 3345: 3342:self-replication 3230: 3229: 3192: 3191: 3050:Self-replicating 3043: 3036: 3029: 3020: 3019: 2993:Low copy repeats 2986:Symbiosis island 2923:Gene duplication 2709: 2708: 2700: 2699: 2583: 2582: 2561:gene duplication 2542: 2535: 2528: 2519: 2518: 2490: 2489: 2479: 2469: 2445: 2439: 2438: 2428: 2418: 2386: 2377: 2376: 2366: 2334: 2328: 2327: 2317: 2293: 2287: 2286: 2276: 2236: 2230: 2229: 2219: 2209: 2185: 2179: 2178: 2168: 2158: 2134: 2128: 2127: 2117: 2093: 2084: 2083: 2047: 2041: 2040: 2012: 2006: 2005: 1995: 1971: 1965: 1964: 1954: 1930: 1924: 1923: 1887: 1881: 1880: 1870: 1853:(1): dmm031930. 1838: 1829: 1828: 1818: 1786: 1777: 1776: 1732: 1726: 1722: 1713: 1712: 1702: 1678: 1672: 1671: 1661: 1629: 1623: 1622: 1612: 1588: 1582: 1581: 1545: 1536: 1535: 1525: 1515: 1491: 1476: 1475: 1439: 1426: 1425: 1423: 1422: 1408: 1402: 1401: 1373: 1367: 1366: 1330: 1324: 1323: 1287: 1281: 1280: 1278: 1277: 1263: 1257: 1256: 1246: 1214: 1205: 1204: 1186: 1162: 1156: 1155: 1145: 1103: 1094: 1093: 1091: 1090: 1076: 1070: 1069: 1059: 1049: 1025: 1019: 1018: 1016: 1015: 1001: 995: 994: 966: 960: 959: 949: 939: 915: 909: 908: 889:10.1038/288645a0 864: 858: 857: 837: 831: 830: 794: 788: 787: 759: 753: 752: 724: 718: 717: 715: 714: 700: 694: 693: 683: 673: 649: 638: 637: 627: 617: 608:(12): e1002384. 593: 284:Inverted repeats 218:retrotransposons 94:Roy John Britten 3874: 3873: 3869: 3868: 3867: 3865: 3864: 3863: 3849: 3848: 3847: 3842: 3792:Synthetic virus 3780:Artificial cell 3753: 3681: 3590: 3479:RNA replication 3474:DNA replication 3462: 3453:Group II intron 3351: 3341: 3329: 3320:Mammalian prion 3302: 3278: 3257:dsRNA satellite 3254:ssDNA satellite 3224: 3217: 3186: 3179: 3124: 3053: 3047: 3017: 3012: 2964: 2913: 2781: 2753: 2730: 2704:Retrotransposon 2685: 2676:Inverted repeat 2664: 2649:DNA transposon 2645:Retrotransposon 2640:Gene conversion 2631: 2624: 2621: 2572: 2563: 2546: 2499: 2494: 2493: 2446: 2442: 2387: 2380: 2335: 2331: 2294: 2290: 2237: 2233: 2188:Bürk K (2017). 2186: 2182: 2135: 2131: 2094: 2087: 2048: 2044: 2013: 2009: 1972: 1968: 1931: 1927: 1904:10.1038/nrn1806 1898:(12): 919–930. 1888: 1884: 1839: 1832: 1787: 1780: 1733: 1729: 1723: 1716: 1679: 1675: 1630: 1626: 1589: 1585: 1562:10.1002/wrna.91 1546: 1539: 1492: 1479: 1456:10.1038/nrg2165 1450:(12): 973–982. 1440: 1429: 1420: 1418: 1410: 1409: 1405: 1374: 1370: 1331: 1327: 1288: 1284: 1275: 1273: 1265: 1264: 1260: 1215: 1208: 1163: 1159: 1134: 1104: 1097: 1088: 1086: 1078: 1077: 1073: 1026: 1022: 1013: 1011: 1005:"Tandem Repeat" 1003: 1002: 998: 967: 963: 930:(5): e1004351. 916: 912: 865: 861: 838: 834: 795: 791: 760: 756: 725: 721: 712: 710: 702: 701: 697: 650: 641: 594: 590: 585: 580: 531: 506: 484: 463: 447: 423: 403: 358: 337:DNA replication 333:strand slippage 293: 276: 250: 203: 147: 123: 77: 28:repeating units 22:(also known as 17: 12: 11: 5: 3872: 3862: 3861: 3844: 3843: 3841: 3840: 3835: 3834: 3833: 3828: 3818: 3812: 3806: 3805: 3804: 3799: 3789: 3784: 3783: 3782: 3777: 3767: 3761: 3759: 3755: 3754: 3752: 3751: 3750: 3749: 3744: 3736: 3731: 3726: 3721: 3715: 3714: 3713: 3702: 3697: 3691: 3689: 3683: 3682: 3680: 3679: 3674: 3673: 3672: 3667: 3659: 3657:Kappa organism 3654: 3653: 3652: 3647: 3642: 3637: 3632: 3622: 3621: 3620: 3615: 3604: 3602: 3596: 3595: 3592: 3591: 3589: 3588: 3587: 3586: 3581: 3571: 3570: 3569: 3564: 3559: 3554: 3544: 3543: 3542: 3532: 3531: 3530: 3528:Non-coding DNA 3525: 3520: 3510: 3509: 3508: 3503: 3498: 3493: 3483: 3482: 3481: 3470: 3468: 3464: 3463: 3461: 3460: 3455: 3450: 3448:Group I intron 3445: 3440: 3439: 3438: 3428: 3427: 3426: 3423: 3414: 3411: 3406: 3401: 3391: 3390: 3389: 3384: 3374: 3373: 3372: 3370:Genomic island 3367: 3356: 3354: 3350:Mobile genetic 3343: 3335: 3334: 3331: 3330: 3328: 3327: 3322: 3316: 3314: 3308: 3307: 3304: 3303: 3301: 3300: 3299: 3298: 3295: 3286: 3284: 3280: 3279: 3277: 3276: 3275: 3274: 3271: 3265: 3258: 3255: 3252: 3249: 3242: 3238: 3236: 3227: 3219: 3218: 3216: 3215: 3208: 3200: 3198: 3189: 3181: 3180: 3178: 3177: 3175:dsDNA-RT virus 3172: 3170:ssRNA-RT virus 3167: 3165:(−)ssRNA virus 3162: 3160:(+)ssRNA virus 3157: 3152: 3147: 3146: 3145: 3134: 3132: 3126: 3125: 3123: 3122: 3121: 3120: 3115: 3105:Incertae sedis 3101: 3100: 3099: 3094: 3089: 3084: 3074: 3069: 3063: 3061: 3055: 3054: 3046: 3045: 3038: 3031: 3023: 3014: 3013: 3011: 3010: 3005: 3000: 2995: 2990: 2989: 2988: 2983: 2976:Genomic island 2972: 2970: 2966: 2965: 2963: 2962: 2957: 2956: 2955: 2945: 2944: 2943: 2933: 2927: 2925: 2919: 2918: 2915: 2914: 2912: 2911: 2906: 2901: 2896: 2891: 2886: 2881: 2876: 2871: 2866: 2861: 2856: 2851: 2846: 2841: 2836: 2831: 2826: 2821: 2816: 2811: 2806: 2801: 2795: 2793: 2791:DNA transposon 2787: 2786: 2783: 2782: 2780: 2779: 2774: 2769: 2763: 2761: 2755: 2754: 2752: 2751: 2746: 2740: 2738: 2732: 2731: 2729: 2728: 2723: 2717: 2715: 2706: 2697: 2691: 2690: 2687: 2686: 2684: 2683: 2678: 2672: 2670: 2666: 2665: 2663: 2662: 2661: 2660: 2655: 2647: 2642: 2636: 2634: 2626: 2625: 2623: 2622: 2619:Macrosatellite 2616: 2606: 2597: 2591: 2589: 2587:Tandem repeats 2580: 2574: 2573: 2568: 2565: 2564: 2545: 2544: 2537: 2530: 2522: 2516: 2515: 2505: 2498: 2497:External links 2495: 2492: 2491: 2440: 2378: 2349:(6): 689–700. 2329: 2288: 2231: 2180: 2149:(2): 125–133. 2129: 2085: 2042: 2023:(1): 109–129. 2007: 1966: 1945:(2): 395–406. 1925: 1882: 1830: 1801:(2): 142–167. 1778: 1727: 1714: 1673: 1624: 1603:(5): 245–257. 1583: 1556:(6): 772–786. 1537: 1477: 1427: 1416:www.nature.com 1403: 1368: 1341:(3): 421–426. 1325: 1298:(3): 421–426. 1282: 1258: 1206: 1177:(1): 265–288. 1157: 1132: 1095: 1080:"MeSH Browser" 1071: 1020: 996: 961: 910: 859: 832: 805:(2): 227–250. 789: 754: 719: 695: 639: 587: 586: 584: 581: 579: 578: 573: 571:Regulator gene 568: 563: 558: 553: 551:Genetic marker 548: 543: 538: 532: 530: 527: 505: 502: 483: 480: 462: 459: 446: 443: 422: 419: 402: 399: 357: 354: 292: 289: 280:Direct repeats 275: 272: 267:crosslinks DNA 249: 246: 230:DNA transposon 202: 199: 155:microsatellite 150:Tandem repeats 146: 145:Tandem repeats 143: 122: 119: 103:microsatellite 79:In the 1950s, 76: 73: 56:tandem repeats 15: 9: 6: 4: 3: 2: 3871: 3860: 3857: 3856: 3854: 3839: 3836: 3832: 3829: 3827: 3824: 3823: 3822: 3819: 3817: 3813: 3811: 3810:Nanobacterium 3807: 3803: 3800: 3798: 3795: 3794: 3793: 3790: 3788: 3785: 3781: 3778: 3776: 3775:Cell division 3773: 3772: 3771: 3768: 3766: 3763: 3762: 3760: 3756: 3748: 3745: 3743: 3740: 3739: 3737: 3735: 3732: 3730: 3727: 3725: 3722: 3720: 3716: 3712: 3709: 3708: 3707: 3703: 3701: 3698: 3696: 3693: 3692: 3690: 3688: 3684: 3678: 3675: 3671: 3668: 3666: 3663: 3662: 3660: 3658: 3655: 3651: 3648: 3646: 3643: 3641: 3638: 3636: 3633: 3631: 3628: 3627: 3626: 3623: 3619: 3618:Hydrogenosome 3616: 3614: 3611: 3610: 3609: 3608:Mitochondrion 3606: 3605: 3603: 3601: 3600:Endosymbiosis 3597: 3585: 3582: 3580: 3579:Tandem repeat 3577: 3576: 3575: 3572: 3568: 3565: 3563: 3560: 3558: 3555: 3553: 3550: 3549: 3548: 3545: 3541: 3538: 3537: 3536: 3533: 3529: 3526: 3524: 3521: 3519: 3516: 3515: 3514: 3511: 3507: 3504: 3502: 3499: 3497: 3494: 3492: 3489: 3488: 3487: 3484: 3480: 3477: 3476: 3475: 3472: 3471: 3469: 3467:Other aspects 3465: 3459: 3456: 3454: 3451: 3449: 3446: 3444: 3441: 3437: 3434: 3433: 3432: 3429: 3424: 3422: 3418: 3415: 3412: 3410: 3407: 3405: 3402: 3400: 3397: 3396: 3395: 3392: 3388: 3385: 3383: 3380: 3379: 3378: 3375: 3371: 3368: 3366: 3363: 3362: 3361: 3358: 3357: 3355: 3353: 3347: 3344: 3340: 3336: 3326: 3323: 3321: 3318: 3317: 3315: 3313: 3309: 3296: 3293: 3292: 3291: 3288: 3287: 3285: 3281: 3272: 3269: 3268: 3266: 3263: 3259: 3256: 3253: 3250: 3247: 3243: 3240: 3239: 3237: 3235: 3231: 3228: 3226: 3220: 3214: 3213: 3212:Avsunviroidae 3209: 3207: 3206: 3205:Pospiviroidae 3202: 3201: 3199: 3197: 3193: 3190: 3188: 3182: 3176: 3173: 3171: 3168: 3166: 3163: 3161: 3158: 3156: 3153: 3151: 3148: 3144: 3141: 3140: 3139: 3136: 3135: 3133: 3131: 3127: 3119: 3116: 3114: 3113: 3109: 3108: 3107: 3106: 3102: 3098: 3095: 3093: 3090: 3088: 3085: 3083: 3080: 3079: 3078: 3075: 3073: 3070: 3068: 3065: 3064: 3062: 3060: 3059:Cellular life 3056: 3051: 3044: 3039: 3037: 3032: 3030: 3025: 3024: 3021: 3009: 3006: 3004: 3001: 2999: 2996: 2994: 2991: 2987: 2984: 2982: 2979: 2978: 2977: 2974: 2973: 2971: 2967: 2961: 2958: 2954: 2951: 2950: 2949: 2946: 2942: 2941:Ribosomal DNA 2939: 2938: 2937: 2934: 2932: 2929: 2928: 2926: 2924: 2920: 2910: 2907: 2905: 2902: 2900: 2897: 2895: 2892: 2890: 2887: 2885: 2882: 2880: 2877: 2875: 2872: 2870: 2867: 2865: 2862: 2860: 2857: 2855: 2852: 2850: 2847: 2845: 2842: 2840: 2837: 2835: 2832: 2830: 2827: 2825: 2822: 2820: 2817: 2815: 2812: 2810: 2807: 2805: 2802: 2800: 2797: 2796: 2794: 2792: 2788: 2778: 2775: 2773: 2770: 2768: 2765: 2764: 2762: 2760: 2756: 2750: 2747: 2745: 2742: 2741: 2739: 2737: 2733: 2727: 2724: 2722: 2719: 2718: 2716: 2714: 2710: 2707: 2705: 2701: 2698: 2696: 2692: 2682: 2681:Direct repeat 2679: 2677: 2674: 2673: 2671: 2667: 2659: 2656: 2654: 2651: 2650: 2648: 2646: 2643: 2641: 2638: 2637: 2635: 2633: 2627: 2620: 2617: 2614: 2610: 2607: 2605: 2604:Minisatellite 2601: 2598: 2596: 2595:Satellite DNA 2593: 2592: 2590: 2588: 2584: 2581: 2579: 2575: 2571: 2566: 2562: 2558: 2554: 2550: 2543: 2538: 2536: 2531: 2529: 2524: 2523: 2520: 2513: 2509: 2506: 2504: 2501: 2500: 2487: 2483: 2478: 2473: 2468: 2463: 2459: 2455: 2451: 2444: 2436: 2432: 2427: 2422: 2417: 2412: 2408: 2404: 2400: 2396: 2392: 2385: 2383: 2374: 2370: 2365: 2360: 2356: 2352: 2348: 2344: 2340: 2333: 2325: 2321: 2316: 2311: 2307: 2303: 2299: 2292: 2284: 2280: 2275: 2270: 2266: 2262: 2258: 2254: 2250: 2246: 2242: 2235: 2227: 2223: 2218: 2213: 2208: 2203: 2199: 2195: 2191: 2184: 2176: 2172: 2167: 2162: 2157: 2152: 2148: 2144: 2140: 2133: 2125: 2121: 2116: 2111: 2107: 2103: 2099: 2092: 2090: 2081: 2077: 2073: 2069: 2065: 2061: 2057: 2053: 2046: 2038: 2034: 2030: 2026: 2022: 2018: 2011: 2003: 1999: 1994: 1989: 1985: 1981: 1977: 1970: 1962: 1958: 1953: 1948: 1944: 1940: 1936: 1929: 1921: 1917: 1913: 1909: 1905: 1901: 1897: 1893: 1886: 1878: 1874: 1869: 1864: 1860: 1856: 1852: 1848: 1844: 1837: 1835: 1826: 1822: 1817: 1812: 1808: 1804: 1800: 1796: 1792: 1785: 1783: 1774: 1770: 1766: 1762: 1758: 1754: 1750: 1746: 1742: 1738: 1731: 1721: 1719: 1710: 1706: 1701: 1696: 1692: 1688: 1684: 1677: 1669: 1665: 1660: 1655: 1651: 1647: 1643: 1639: 1635: 1628: 1620: 1616: 1611: 1606: 1602: 1598: 1594: 1587: 1579: 1575: 1571: 1567: 1563: 1559: 1555: 1551: 1544: 1542: 1533: 1529: 1524: 1519: 1514: 1509: 1505: 1501: 1497: 1490: 1488: 1486: 1484: 1482: 1473: 1469: 1465: 1461: 1457: 1453: 1449: 1445: 1438: 1436: 1434: 1432: 1417: 1413: 1407: 1399: 1395: 1391: 1387: 1383: 1379: 1372: 1364: 1360: 1356: 1352: 1348: 1344: 1340: 1336: 1329: 1321: 1317: 1313: 1309: 1305: 1301: 1297: 1293: 1286: 1272: 1268: 1262: 1254: 1250: 1245: 1240: 1236: 1232: 1228: 1224: 1220: 1213: 1211: 1202: 1198: 1194: 1190: 1185: 1180: 1176: 1172: 1168: 1161: 1153: 1149: 1144: 1139: 1135: 1133:9780121531379 1129: 1125: 1121: 1117: 1113: 1109: 1102: 1100: 1085: 1081: 1075: 1067: 1063: 1058: 1053: 1048: 1043: 1039: 1035: 1031: 1024: 1010: 1006: 1000: 992: 988: 984: 980: 976: 972: 965: 957: 953: 948: 943: 938: 933: 929: 925: 924:PLOS Genetics 921: 914: 906: 902: 898: 894: 890: 886: 882: 878: 874: 870: 863: 855: 851: 847: 843: 836: 828: 824: 820: 816: 812: 808: 804: 800: 793: 785: 781: 777: 773: 769: 765: 758: 750: 746: 742: 738: 734: 730: 723: 709: 705: 699: 691: 687: 682: 677: 672: 667: 663: 659: 655: 648: 646: 644: 635: 631: 626: 621: 616: 611: 607: 603: 602:PLOS Genetics 599: 592: 588: 577: 576:Satellite DNA 574: 572: 569: 567: 564: 562: 561:Noncoding DNA 559: 557: 554: 552: 549: 547: 544: 542: 539: 537: 534: 533: 526: 522: 519: 515: 511: 504:Biotechnology 501: 499: 498: 493: 489: 479: 476: 472: 467: 458: 456: 451: 442: 440: 436: 432: 428: 418: 415: 411: 407: 394: 390: 388: 384: 380: 379: 374: 370: 362: 353: 350: 346: 342: 338: 334: 330: 326: 322: 318: 314: 310: 306: 302: 298: 288: 285: 281: 271: 268: 264: 260: 259: 254: 245: 241: 239: 233: 231: 227: 223: 219: 214: 212: 207: 198: 190: 186: 183: 179: 175: 170: 167: 162: 160: 159:minisatellite 156: 151: 142: 140: 136: 132: 128: 118: 116: 112: 108: 104: 100: 99:minisatellite 95: 90: 86: 82: 72: 69: 68:crossing over 63: 61: 57: 51: 49: 45: 41: 37: 33: 29: 25: 21: 3797:Viral vector 3640:Gerontoplast 3573: 3567:Transpoviron 3339:Nucleic acid 3325:Fungal prion 3223:Helper-virus 3210: 3203: 3110: 3103: 2953:Gene cluster 2721:Alu sequence 2630:Interspersed 2577: 2552: 2457: 2453: 2443: 2401:(1): 36665. 2398: 2394: 2346: 2342: 2332: 2308:(1): 46–53. 2305: 2301: 2291: 2248: 2244: 2234: 2197: 2193: 2183: 2146: 2142: 2132: 2105: 2101: 2058:(1): 17065. 2055: 2051: 2045: 2020: 2016: 2010: 1983: 1979: 1969: 1942: 1938: 1928: 1895: 1891: 1885: 1850: 1846: 1798: 1794: 1740: 1736: 1730: 1693:(1): 19–29. 1690: 1686: 1676: 1641: 1637: 1627: 1600: 1596: 1586: 1553: 1549: 1506:(11): 2952. 1503: 1499: 1447: 1443: 1419:. Retrieved 1415: 1406: 1381: 1377: 1371: 1338: 1334: 1328: 1295: 1291: 1285: 1274:. Retrieved 1270: 1267:"Centromere" 1261: 1226: 1222: 1174: 1170: 1160: 1115: 1111: 1087:. Retrieved 1083: 1074: 1040:(13): 3365. 1037: 1033: 1023: 1012:. Retrieved 1008: 999: 974: 970: 964: 927: 923: 913: 872: 868: 862: 845: 841: 835: 802: 798: 792: 767: 763: 757: 732: 728: 722: 711:. Retrieved 707: 698: 661: 657: 605: 601: 591: 523: 507: 495: 485: 474: 470: 464: 454: 448: 425:The disease 424: 413: 409: 404: 382: 376: 367: 294: 277: 256: 251: 242: 234: 215: 204: 195: 178:G quadruplex 171: 163: 148: 124: 78: 64: 52: 31: 27: 23: 19: 18: 3821:Cancer cell 3687:Abiogenesis 3635:Chromoplast 3630:Chloroplast 3413:Degradative 3155:dsRNA virus 3150:ssDNA virus 3143:Giant virus 3138:dsDNA virus 2948:Gene family 2859:Tc1/mariner 2814:EnSpm/CACTA 2251:(1): 4178. 1743:(1): 1–22. 848:: 366–370. 664:(11): 896. 263:mitomycin C 182:Centromeres 48:centromeres 40:genomic DNA 3729:Proteinoid 3724:Coacervate 3677:Nitroplast 3670:Trophosome 3665:Bacteriome 3650:Apicoplast 3645:Leucoplast 3486:Chromosome 3404:Resistance 3112:Parakaryon 2960:Pseudogene 2777:retroposon 2695:Transposon 2557:transposon 2454:Mobile DNA 2108:: 102669. 2102:DNA Repair 1421:2022-09-30 1276:2022-09-30 1271:Genome.gov 1089:2022-09-30 1014:2022-09-30 1009:Genome.gov 713:2022-10-04 583:References 378:huntingtin 349:DNA damage 341:DNA repair 339:or during 307:, several 115:regulation 85:centromere 3738:Research 3719:Protocell 3458:Retrozyme 3417:Virulence 3399:Fertility 3246:Virophage 3234:Satellite 3225:dependent 3077:Eukaryota 2879:P element 2829:Harbinger 2570:Repeatome 2460:(1): 15. 1986:: 65–78. 1757:1097-4644 1578:222199613 1384:: 12–19. 1118:: 37–75. 977:: 34–42. 735:: 13–47. 375:1 of the 238:enhancers 174:telomeres 111:variation 44:telomeres 3853:Category 3765:Organism 3758:See also 3734:Sulphobe 3711:Ribozyme 3706:RNA life 3613:Mitosome 3557:Prophage 3552:Provirus 3540:Replicon 3496:Circular 3443:Phagemid 3360:Mobilome 3352:elements 3262:Virusoid 3185:Subviral 3097:Protista 3082:Animalia 3067:Bacteria 3003:Telomere 2969:See also 2909:Zisupton 2889:Polinton 2884:PiggyBac 2839:Helitron 2658:Helitron 2653:Polinton 2549:Genetics 2486:29743957 2435:27819354 2373:23160421 2324:27141276 2283:32826895 2226:28405347 2200:(1): 4. 2175:18568057 2124:31331820 2072:28960184 2037:17477822 2002:22180703 1961:28017939 1920:10119487 1912:16288298 1877:29419417 1825:25608779 1773:22204780 1725:PMC45674 1709:23676707 1668:33990851 1619:26781081 1570:21976282 1532:34831175 1472:32132898 1464:17984973 1398:25917896 1355:26363799 1320:15229421 1312:26363799 1253:15933211 1201:51718804 1193:30044650 1066:31323950 991:29525543 956:24809441 827:18866824 819:15921050 749:14942727 690:31698818 634:22144907 529:See also 510:sequence 429:has CAG 325:germline 89:telomere 3747:Jeewanu 3661:Organs 3625:Plastid 3425:Cryptic 3394:Plasmid 3092:Plantae 3072:Archaea 2899:Transib 2874:Novosib 2854:Kolobok 2824:Ginger2 2819:Ginger1 2804:Crypton 2477:5930866 2426:5098217 2403:Bibcode 2364:3923493 2315:4852070 2274:7442818 2253:Bibcode 2217:5383992 2166:2413192 1993:3237673 1868:5818082 1816:4454471 1765:8891900 1659:8257530 1523:8616336 1244:1142406 1152:9352183 1143:3151733 1057:6651174 947:4014423 905:4370178 897:7453798 877:Bibcode 854:5065367 784:4874239 764:Science 681:6895920 625:3228813 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1468:S2CID 1359:S2CID 1316:S2CID 1197:S2CID 901:S2CID 823:S2CID 658:Genes 414:FMR1. 345:genes 226:SINEs 222:LINEs 3826:HeLa 3770:Cell 3518:Gene 2894:Sola 2869:MuDR 2809:Dada 2772:MER4 2767:HERV 2759:LTRs 2482:PMID 2431:PMID 2369:PMID 2320:PMID 2279:PMID 2222:PMID 2171:PMID 2120:PMID 2068:PMID 2033:PMID 1998:PMID 1957:PMID 1908:PMID 1873:PMID 1821:PMID 1761:PMID 1705:PMID 1664:PMID 1615:PMID 1566:PMID 1528:PMID 1460:PMID 1394:PMID 1351:PMID 1308:PMID 1249:PMID 1189:PMID 1148:PMID 1128:ISBN 1062:PMID 987:PMID 952:PMID 893:PMID 850:PMID 815:PMID 780:PMID 745:PMID 686:PMID 630:PMID 536:FREP 490:and 475:DMPK 471:ZNF9 435:SCA1 410:FMR1 373:exon 315:and 131:junk 113:and 101:and 87:and 3409:Col 3297:DNA 3294:RNA 3273:DNA 3270:RNA 2834:hAT 2726:MIR 2472:PMC 2462:doi 2421:PMC 2411:doi 2359:PMC 2351:doi 2310:PMC 2269:PMC 2261:doi 2212:PMC 2202:doi 2161:PMC 2151:doi 2110:doi 2060:doi 2025:doi 1988:PMC 1947:doi 1900:doi 1863:PMC 1855:doi 1811:PMC 1803:doi 1745:doi 1695:doi 1654:PMC 1646:doi 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1414:. 1392:. 1382:31 1357:. 1349:. 1339:23 1337:. 1314:. 1306:. 1296:23 1294:. 1269:. 1247:. 1237:. 1227:33 1225:. 1221:. 1209:^ 1195:. 1187:. 1175:34 1173:. 1169:. 1146:. 1136:. 1126:. 1116:37 1114:. 1110:. 1098:^ 1082:. 1060:. 1050:. 1038:20 1036:. 1032:. 1007:. 985:. 975:49 973:. 950:. 940:. 928:10 926:. 922:. 899:. 891:. 883:. 871:. 846:23 844:. 821:. 813:. 803:80 801:. 778:. 766:. 743:. 733:16 731:. 706:. 684:. 674:. 662:10 660:. 656:. 642:^ 628:. 618:. 604:. 600:. 437:; 319:. 311:, 303:, 50:. 26:, 3814:? 3808:? 3717:† 3704:? 3419:/ 3264:) 3248:) 3042:e 3035:t 3028:v 2615:) 2611:( 2602:/ 2541:e 2534:t 2527:v 2488:. 2464:: 2458:9 2437:. 2413:: 2405:: 2399:6 2375:. 2353:: 2326:. 2285:. 2263:: 2255:: 2228:. 2204:: 2198:4 2177:. 2153:: 2147:1 2126:. 2112:: 2082:. 2062:: 2056:3 2039:. 2027:: 2021:8 2004:. 1984:5 1963:. 1949:: 1922:. 1902:: 1896:6 1879:. 1857:: 1827:. 1805:: 1775:. 1747:: 1711:. 1697:: 1670:. 1648:: 1621:. 1607:: 1580:. 1560:: 1554:2 1534:. 1510:: 1474:. 1454:: 1448:8 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Index

genome
genomic DNA
telomeres
centromeres
tandem repeats
interspersed repeats
crossing over
Barbara McClintock
centromere
telomere
Roy John Britten
minisatellite
microsatellite
molecular ecology
variation
regulation
Transposable elements
junk
selfish
exapted
Tandem repeats
microsatellite
minisatellite
homologous recombination
telomeres
G quadruplex
Centromeres

Interspersed repeats
transposable elements

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