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.
(Biol.)