2. Which of the following is NOT a force that changes gene frequencies for populations?
(A) mutation.
(B) random genetic drift.
(C) migration.
(D) genome size.
(E) natural selection.
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統計: A(3), B(4), C(8), D(34), E(1) #1118734
統計: A(3), B(4), C(8), D(34), E(1) #1118734