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A skin and respiratory fungus killed most of the tree frogs in a hypothetical forest in the state of Washington. The population dropped from 1,200 to 320. Scientists caught 25 frogs and, in an effort to help preserve the species, started a new population in a similar forest in the eastern portion of the state of Oregon.

Which of the following factors would probably have the LEAST impact on this new population?

A

The founder effect, since there would be a large population with immigration.

B

Random mating, since this affects populations regardless of size.

C

Genetic drift, since the small population will have variability in allele frequency.

D

The bottleneck effect, since the small population will go through a decrease in allelic variability.

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