AP BIOLOGY

Detailed explanation-1: -Their streamlined bodies, dorsal fins and flippers are the result of convergent evolution. Since dolphins and sharks occupy similar niches and face similar challenges, similar adaptations have been advantageous to them, resulting in their analogous structures.

Detailed explanation-2: -Analogous structures are anatomically different but perform similar functions and hence are a result of convergent evolution. It occurs when two groups of largely unrelated organisms are exposed to very similar environments and develop similar adaptations to survive.

Detailed explanation-3: -When two groups of organisms independently evolve similar adaptations, it’s called convergent evolution. Sharks and whales both have streamlined bodies and tail flukes.

Detailed explanation-4: -Whales, sharks and seals have different ancestral origin but they have evolved their limbs for the function of swimming. These limbs are called analogous organs and they point towards a convergent evolution.

Detailed explanation-5: -Analogous structure supports convergent evolution as these are structures developed by species that they did not inherit jointly from the same ancestor. These structures form as the organism adapts to a change in the environment.