Meaning : Not corresponding in structure or evolutionary origin.
Synonyms : heterologic, heterological
Corresponding in function but not in evolutionary origin.
The wings of a bee and those of a hummingbird are analogous.Having the same evolutionary origin but not necessarily the same function.
The wing of a bat and the arm of a man are homologous.Meaning : Derived from organisms of a different but related species.
Example :
A heterologous graft.
Corresponding or similar in position or structure or function or characteristics. Especially derived from an organism of the same species.
A homologous tissue graft.