The medium ground finches (normally distinguished by a range of beak sizes) that survive drought conditions in the Galapagos are able to eat the large and tough seeds from the fever plant. This survival can be described best as _______.

Question

The medium ground finches (normally distinguished by a range of beak sizes) that survive drought conditions in the Galapagos are able to eat the large and tough seeds from the fever plant. This survival can be described best as 	_______.

Quizplus · Accepted Answer

Directional selection occurs when environmental pressures favor one extreme phenotype over others, leading to a shift in the population's traits, such as larger beak sizes in finches that can eat tough seeds.

The Medium Ground Finches (Normally Distinguished by a Range of Beak