ANATOMY

Detailed explanation-1: -In general terms, the homologies definition refers to a similarity in genetics or structure between two species that implies a common ancestor. There are three main categories of homologies: structural, developmental, and molecular.

Detailed explanation-2: -homology, in biology, similarity of the structure, physiology, or development of different species of organisms based upon their descent from a common evolutionary ancestor.

Detailed explanation-3: -Hence, the wings of butterflies and bats are not the examples of homologous organs.

Detailed explanation-4: -Dependent on the level of comparison four types of homology are defined: ( 1) Iterative ( = serial = homonomy), (2) ontogenetic, (3) di-or polymor-phic, and (4) supraspecific homology. The significance of all four types for evolutionary biology and phylogenetic analysis is outlined.