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n. Similarity of structure between organs or parts, possibly of dissimilar function, that are related by common descent.

n. Similarity in structure, though of different function, because of genetic relationships

n. Joint nature.

n. The correspondence of common descent; -- a term used to supersede homology by Lankester, who also used homoplasy to denote any superinduced correspondence of position and structure in parts embryonically distinct (other writers using the term homoplasmy). Thus, there is homogeny between the fore limb of a mammal and the wing of a bird; but the right and left ventricles of the heart in both are only in homoplasy with each other, these having arisen independently since the divergence of both groups from a univentricular ancestor.

n. Sameness of nature or kind.

n. In biology, descent from a common ancestor; blood-relationship among animals.

n. (biology) similarity because of common evolution

"Lankester "homogeny;" [162] and (2) a relationship induced, not derived -- such as exists between parts closely similar in relative position, but with no genetic affinity, or only a remote one, as the homological relation between the chambers of the heart of a bat and those of a {159} bird, or the similar teeth of the thylacine and the dog before spoken of."

similarity   

homogenous   

ontogeny    phylogeny    progeny