Type your answer on the lines below, or write it out on paper.
Three species, P, Q and R, were compared. Species Q shares 98 percent of its DNA base sequence with species P. Species R shares 85 percent of its DNA base sequence with species P.
Deduce which of species Q and R is more closely related to species P.
Explain your answer to part (a).
Suggest why two organisms that share a high percentage of their DNA may still not look alike.