A Structure That is Derived from an Equivalent Structure in a Common

Question

A structure that is derived from an equivalent structure in a common ancestor is called _________.
A) Homologous
B) Synonymous
C) Analogous
D) Divergent

Accepted Answer

Homologous structures are those that have a similar structure and position in different organisms due to their descent from a common ancestor. This means that they have similar developmental pathways and genetic basis, but may have different functions in different species. Therefore, if a structure is derived from an equivalent structure in a common ancestor, it is considered homologous.