Question

If two fossils are found to be similar but not identical, what type of evidence could be used to determine their relatedness?

1) Comparative anatomy
2) Comparative embryology
3) Comparative DNA analysis
4) All of the above

Answer 1

To determine the relatedness of two similar fossils, evidence from comparative anatomy, comparative embryology, and comparative DNA analysis can all be used. These methods reveal homologous structures, developmental similarities, and genetic similarities that help trace evolutionary connections.

Step-by-step explanation:

If two fossils are found to be similar but not identical, the type of evidence that could be used to determine their relatedness includes:

1. Comparative anatomy
2. Comparative embryology
3. Comparative DNA analysis
4. All of the above

Comparative anatomy involves studying the similarities and differences in the structures of different species, which might reveal homologous structures that indicate common ancestry. Comparative embryology examines the embryonic development of different species to uncover similarities that suggest a shared evolutionary path. Comparative DNA analysis compares the genetic sequences of organisms to determine the degree of relatedness. All three approaches combined provide a comprehensive view of the evolutionary history and can support or refute hypotheses about the relatedness of fossils.