Question

at some stages, human and chicken embryos appear very similar. which of the following best explains this similarity? humans and chickens share a common ancestor. humans and chickens have a similar diet. humans and chickens both evolved in cold climates. all animals have similar - looking embryos.

Explanation:

Similar embryonic features often indicate a common - ancestor. Diet and climate don't explain embryonic similarity, and not all animals have similar - looking embryos.

Answer:

Humans and chickens share a common ancestor.