Question

Which of the following defines evolution? a change in environmental conditions a change in an animal''s physical traits a change in a population''s gene pool a change in an individual''s genetic makeup

Answer 1

a change in a populations gene

Explanation: Years late but the answer still the same

Answer 2

Both "a change in an animal's physical traits" and "a change in a population's gene pool" describe the process of evolution. The former is for specific animals while the latter is for the population as a whole.