Extinction occurs when
a. No member of a species can adapt to changing conditions before it dies.
b. no member of a species has the alleles necessary to survive and reproduce when conditions change.
c. members of a species do not realize that conditions are changing until the gene pool is greatly diminished.
d. the changing conditions fail to produce new alleles to save the species.
e. All of the answer choices are correct.
Answer: b. no member of a species has the alleles necessary to survive and reproduce when conditions change.
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Figure 8.3
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