Question

http://smolynscience.weebly.com/uploads/4/7/0/3/47036693/dna_evidence_of_evolution_homework.docx Please help!

Answer 1

4. The researcher can check the similarity in DNA composition between X and a mammal as well as X and a marsupial. Greater similarity means, they are more likely to share a common ancestor.
5. The DNA sequence encoding the protein heamoglobin is the same in humans, birds, reptiles etc. Hence, the RBC of all the organisms make similar kind of protien.

Answer 2

Thank you very much!

Answer 3

:)