What major factors allowed the birds to adapt to their new environment?
A) mutation and increased reproductive fit of some offspring
B) the founder effect followed by reproductive isolation
C) genetic drift followed by mutation
D) mutation and disruptive selection
E) mutation followed by reproductive isolation
Question 2
Determining that there were 13 different species of finches, Darwin proposed that they arose by ________.
A) natural selection
B) disruptive selection
C) genetic drift
D) stabilizing selection
E) convergent evolution