stion 4
Biologists study the physical structures of species and compare them to the fossil record. New technology allows scientists to examine the DNA of different species, and they have discovered that species that appear very different actually share many DNA sequences. What does this evidence suggest?
DNA sequences are almost identical in every species.
b These species must be from the same geographical region.
C These species may share a common ancestor,
d DNA sequences do not determine species' physical characteristics.