Question

New evidence suggests that the genetic diversity of the Alaskan gray wolf increased significantly after the last ice age, when this population was no longer isolated from other populations. This increase in genetic diversity is most likely due to _______.

		mutation
		genetic drift
		gene flow
		natural selection

The population of Florida panthers is declining rapidly because of loss of habitat. What effect is genetic drift likely to have on this population?

		Genetic drift tends to increase fitness because it speeds up the rate at which natural selection can act on the population.
		Genetic drift will tend to increase fitness because it causes the genetic diversity of the population to increase.
		Genetic drift is random with respect to fitness but may reduce the fitness of individuals if beneficial alleles are lost.
		Genetic drift decreases fitness because it decreases genetic diversity in the population, which decreases the fitness of individuals in the population.

Answer 1

Gene flow is the right answer.

Because the migration occurs between the two island. They are not separated. The migration of individuals from one island to another will lead to the gene flow between the island. That's why there is found more genetic variation between the population.

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D is the answer.

Genetic drift is a random process. This leads to fix the random allele in a population. The dominant or recessive allele can be fixed.

The genetic variation is reduced in the population due to loss of one allele in the population.

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answered by: anonymous