阿摩線上測驗
30. Which of these is the smallest unit upon which natural selection directly acts?
(A) a species' gene frequency
(B) a population's gene frequency
(C) an individual's genome
(D) an individual's phenotype
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統計： A(0), B(0), C(0), D(1), E(0) #3389855
統計： A(0), B(0), C(0), D(1), E(0) #3389855
