A dolphin is a mammal that must come up to the water's surface to breathe. A shark is a fish that breathes underwater. Yet the dolphin and shark have similar body shapes. are these body shapes analogous or homologous? How come?

homologous

Explanation:

sharks and dolphins pretty much have the same body types but there is some differences .

analogous

Explanation:

If two species face a similar problem, challenge or opportunity, evolution may end up shaping them both in similar ways. Both dolphins and sharks swim after prey in the ocean. Streamlined bodies and fins provide a big advantage for them, allowing them to swim faster. We know that dolphins and sharks are not closely related, and they didn't inherit their similar body shapes from a common ancestor. 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. even though I don't believe in evolution , hope I could help.

b is dominant over the allele for the white fur.

sex cells are usually half's then they find another half and make a fertilize egg