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Homologous - Dictionary Definition and Overview |
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Homologous : adj
1: having the same evolutionary origin but serving different
functions; "the wing of a bat and the arm of a man are
homologous" [ant: analogous, heterologous]
2: corresponding or similar in position or structure or
function or characteristics; especially derived from an
organism of the same species; "a homologous tissue graft"
[ant: heterologous, autologous]
Based on WordNet 2.0
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Homologous : \Ho*mol"o*gous\, a. [Gr. ? assenting, agreeing; ? the
same _ ? speech, discourse, proportion, ? to say, speak.]
Having the same relative position, proportion, value, or
structure. Especially:
(a) (Geom.) Corresponding in relative position and
proportion.
In similar polygons, the corresponding sides,
angles, diagonals, etc., are homologous. --Davies &
Peck (Math.
Dict.).
(b) (Alg.) Having the same relative proportion or value, as
the two antecedents or the two consequents of a
proportion.
(c) (Chem.) Characterized by homology; belonging to the same
type or series; corresponding in composition and
properties. See Homology, 3.
(d) (Biol.) Being of the same typical structure; having like
relations to a fundamental type to structure; as, those
bones in the hand of man and the fore foot of a horse are
homologous that correspond in their structural relations,
that is, in their relations to the type structure of the
fore limb in vertebrates.
Homologous stimulus. (Physiol.) See under Stimulus.
Based on Webster's Revised Unabridged Dictionary
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Homologous : Homologous: The relationship between two chromosomes that are paired and so are homologs of each other.
Based on Webster's Revised Unabridged Dictionary (1913)
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Example Usage of Homologous |
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naontiotami: New Homologous Legs blog post: "Saturday Morning Miniblog Update - Fossils, Filters and (Eco-)Facists" http://is.gd/5sU3U |
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naontiotami: Homologous Legs Mini - James Randi hijacked by AGW "skeptics": http://is.gd/5sSOw |
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naontiotami: Homologous Legs Mini - The evolution of koalas revealed: http://is.gd/5sRpM |
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