What is the best evidence is there that the 15 species of finch all evolved from one common ancestor?
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1 point
aObservation of all 15 species shows that they look incredibly similar, with minor changes to beak size and shape.
bScientists have been studying them since Darwin in 1835 and have watched them evolve.
cThese 15 species are found nowhere else in the world, and the islands are located close enough to the mainland for birds to migrate.
dDNA analysis shows that their DNA is almost identical with only minor changes.