AP BIOLOGY

Detailed explanation-1: -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-2: -Organisms that seem fairly similar on the basis of comparative anatomy, show more genes in common than organisms that aren’t much alike. For example, 96% of the genes in humans and chimpanzees are identical. That two species and their common ancestor have similar DNA is strong evidence supporting evolution.

Detailed explanation-3: -There are five lines of evidence that support evolution: the fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology.

Detailed explanation-4: -Anatomy and Embryology Another type of evidence for evolution is the presence of structures in organisms that share the same basic form. For example, the bones in the appendages of a human, dog, bird, and whale all share the same overall construction (Figure 11.11).

Detailed explanation-5: -Which of the following are molecular evidences for common descent?-All organisms use the same DNA triplet code and the same amino acids in their proteins.