Question

Which of the four factors that affect evolution apply to the finches that the Grants studied? Use evidence from your research to support your answer.

Answer 1

Answer:

. There are four principles at work in evolution—variation, inheritance, selection and time.

. Natural selection occurs if four conditions are met: reproduction, heredity, variation in physical characteristics and variation in number of offspring per individual.

. (The only other finch on the island is the cactus finch.)