A scientist studying evolution of peppered moths (Biston betularia) in Michigan observed that the percentage of melanic moths increased by around 2% from 1960-1961. Has evolution occurred in this population?
A. No, because the frequency of the melanic moths did not change enough to be considered evolution.
B. Yes, because the frequency of the melanic moths in the population changed over time.
C. Yes, because the frequency of melanic moths decreased.
D. No, because melanism wasn't adaptive at that time.
Answer: B
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Indicate whether the statement is true or false