The amount of time that has passed since two species last shared a common ancestor:
a) is revealed by the degree of similarity in sections of their DNA.
b) can be determined for prokaryotic species but not eukaryotes.
c) cannot be determined, due to the fact that most species pass through the same embryological stages.
d) cannot be determined, due to gaps in the fossil record.
e) can be determined by the relative amounts of uranium-238 found in the bones of individuals from each species.
Ans: a) is revealed by the degree of similarity in sections of their DNA.
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