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Relative direction and chirality are distinct concepts. Relative direction is from the point of view of the observer; a completely symmetric object has a left side and a right side, from the observer's point of view, if the top and bottom and direction of observation are defined. Chirality, however,
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include equal numbers of right- and left-sided individuals, and are generally more symmetric than other families.
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Schematic illustration of the two strike-slip fault types. The view is of the Earth's surface from above.
167:(left-handed). Very few species show an even mixture of dextral and sinistral individuals (for example,
163:(right-handed). A small minority of species and genera have shells in which the coils are almost always
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Chapleau, Francois & Amaoka, Kunio (1998). Paxton, J.R. & Eschmeyer, W.N. (eds.).
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Schilthuizen M. & Davison A. (2005). "The convoluted evolution of snail chirality".
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refer to the horizontal component of the movement of blocks on either side of a
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Over 90% of gastropod species have shells in which the direction of the coil is
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or right-eyed flatfish), and in others, they are always on the left (
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is observer-independent: no matter how one looks at a right-hand
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362:Encyclopedia of Fishes
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16:Two types of chirality
346:Amphidromus perversus
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170:Amphidromus perversus
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299:Terms of orientation
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321:Naturwissenschaften
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49:words for "left" (
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186:European flounder
126:Neptunea despecta
111:Neptunea angulata
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418:Categories
306:References
284:Laterality
252:shear zone
150:gastropods
134:Gastropods
39:handedness
424:Chirality
240:sinistral
206:sinistral
165:sinistral
154:chirality
116:sea snail
71:clockwise
67:chemistry
35:chirality
27:Sinistral
294:Symmetry
269:heraldry
258:See also
198:flatfish
190:flatfish
177:Flatfish
51:sinister
244:dextral
236:geology
216:Geology
202:dextral
161:dextral
97:Biology
83:anatomy
79:physics
59:dextro-
31:dextral
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146:shells
121:Right:
55:dexter
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248:fault
106:Left:
69:, or
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393:ISBN
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242:and
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