BIOLOGY



Biology

Biology

Q1.

Homologies are characters that are equal because of widespread ancestry. If species A and B are close relations, they should inherit the identical molecular and anatomical traits from their common ancestor. One can thus use homologous characters to ascertain evolutionary relationships. A tree that is constructed by using molecular homologies should be similar, if not equal, to another tree that is constructed by utilising anatomical homologies.

There are basically three categories into which the homology evidence falls: anatomical, embryonic, and biochemical Despite some overlap between the categories, these three is a reasonable way to separate the evidence (Myer, 1991).

Since ...