Homologous
[hɒ'mɒlәgәs]
Definition
(adj.) corresponding or similar in position or structure or function or characteristics; especially derived from an organism of the same species; 'a homologous tissue graft' .
(adj.) having the same evolutionary origin but not necessarily the same function; 'the wing of a bat and the arm of a man are homologous' .
Inputed by Amanda--From WordNet
Definition
(a.) Having the same relative position, proportion, value, or structure.
(a.) Corresponding in relative position and proportion.
(a.) Having the same relative proportion or value, as the two antecedents or the two consequents of a proportion.
(a.) Characterized by homology; belonging to the same type or series; corresponding in composition and properties. See Homology, 3.
(a.) 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.
Checker: Terrance
Synonyms and Synonymous
a. [1]. Of the same ratio, of the same proportion.[2]. Of the same type, corresponding in structure.
Checker: Sophia
Definition
adj. agreeing: corresponding in relative position proportion value or structure.—adj. Homolog′ical.—v.t. and v.i. Homol′ogise.—ns. Hom′ologue that which is homologous to something else as the same organ in different animals under its various forms and functions; Homol′ogy the quality of being homologous: affinity of structure and not of form or use.
Typist: Rudy
Examples
- Homologous parts tend to vary in the same manner, and homologous parts tend to cohere. Charles Darwin. On the Origin of Species by Means of Natural Selection.
- Hence in the several fishes furnished with electric organs, these cannot be considered as homologous, but only as analogous in function. Charles Darwin. On the Origin of Species by Means of Natural Selection.
- Such parts, whether more or less modified, unless their common origin became wholly obscured, would be serially homologous. Charles Darwin. On the Origin of Species by Means of Natural Selection.
- Hence the same names can be given to the homologous bones in widely different animals. Charles Darwin. On the Origin of Species by Means of Natural Selection.
- The anterior and posterior limbs in all the higher vertebrate classes are plainly homologous. Charles Darwin. On the Origin of Species by Means of Natural Selection.
Typist: Rudy