HELP! this is a biology question so please answer if you know:)

What are the types of mutations, and how does each alter the encoded protein? college level answer

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent