Fish, reptiles, amphibians, reptiles and mammals
To rebuild and repair the muscles in the body when it get damaged.
To avoid predators, animals often camouflage. It is an animal adaptation in order to protect themselves from predators. Adelie penguins' predators are white sharks and they have developed coloration similar to the white sharks. That way white sharks will hardly distinguish them from other sharks.
The answer is two alleles, so B.