LIFE SCIENCE

Detailed explanation-1: -Vestigial structures are homologous to fully functioning structures inherited by related lineages. Thus, they provide strong evidence of common ancestry and can help us trace the evolutionary origin of the species with the vestigial structures.

Detailed explanation-2: -Comparative anatomy is the study of the similarities and differences in the structures of different species. Similar body parts may be homologous structures or analogous structures. Both provide evidence for evolution.

Detailed explanation-3: -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-4: -The fossil record provides evidence for evolution. Selective breeding of domesticated animals shows that artificial selection can cause evolution. Evolution of homologous structures by adaptive radiation explains similarities in structure when there are differences in function.