Question

2. Read each statement below about microevolutionary processes.

• Identify each statement as correct or incorrect. • Rewrite and correct each incorrect statement.

a) Beneficial mutations arise when they are needed as the environment changes.

b) In 1977, individual medium ground finches adapted to drought conditions and then passed those traits on to their offspring.

Answer 1

Question

a. Beneficial mutation are those that are beneficial for the organism and arises when environment condition changes. The beneficial mutation arises in order to allow living organism to survive and reproduce.

Hence, it is correct statement.

b. In the year 1977, drought force finches to surive in low food availability. Only those finches that were able to survive in drought because of the heritable variation surivive and pass those trait in next generations.

Hence, it is incorrect statement.