What evidence is there that the 15 species of finch all evolved from one common ancestor? A) Scientists have been studying them since Darwin in 1835 and have watched them evolve.

B) Observation of all 15 species shows that they look incredibly similar, with minor changes to beak size and
shape.

C) DNA analysis shows that their DNA is almost identical with only minor changes.

D) These 15 species are found nowhere else in the world, and the islands are located close enough to the
mainland for birds to migrate.