ANATOMY

Detailed explanation-1: -Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. Analogous structures are structures that are similar in unrelated organisms. Comparative embryology is the study of the similarities and differences in the embryos of different species.

Detailed explanation-2: -Related organisms have similar bodily structures, or anatomy; for example, the skeletons of humans, rats, and bats are similar, despite numerous obvious differences. In fact, there is a bone-by-bone similarity in the bodies of these three animals.

Detailed explanation-3: -Two major concepts of comparative anatomy are: Homologous structures-structures (body parts/anatomy) which are similar in different species because the species have common descent and have evolved, usually divergently, from a shared ancestor. They may or may not perform the same function.

Detailed explanation-4: -comparative anatomy, the comparative study of the body structures of different species of animals in order to understand the adaptive changes they have undergone in the course of evolution from common ancestors.

Detailed explanation-5: -Homologous structures. Analogous structures. Vestigial structures.