Question

question 3
0.5 pt
the similarity of the embryos of fish, frogs, birds, and humans is evidence of ______.
convergent evolution
common ancestry
analogy
genetic drift
question 4

Explanation:

• Convergent evolution: Refers to different species evolving similar traits independently, not related to embryo similarity indicating a shared past.
• Common ancestry: Embryo similarities among fish, frogs, birds, and humans suggest they descended from a common ancestor. Early - stage embryo resemblances are a key piece of evidence for evolutionary relationships.
• Analogy: Is about similar functions in different species (e.g., wings of insects and birds for flight), not embryo - based evidence.
• Genetic drift: Is a random change in allele frequencies in a population, not related to embryo similarity as evidence of a particular evolutionary concept like common ancestry.

Answer:

common ancestry