A population of rare frogs is reduced by 90% in number when a large dam is constructed that obliterates most of their prior habitat. Which of the following is probably true?
A. The genetic diversity of the remaining
frogs is unlikely to be different from the
original population.
B. The effects of natural selection on the
smaller population's genetic variation will not
be significant.
C. Speciation cannot occur through genetic
drift alone.
D. The reduced genetic diversity of the
remaining frogs makes genetic drift more
likely.
D
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