In Kerr and Wright's experiment with 96 fruit-fly populations, only 4 males and 4 females bred in each generation. After 16 generations, 73% of their populations had only one allele present for the bristle morphology gene. Which of the following would you expect to occur if they allowed 10 males and 10 females to breed each in generation?

1 About 73% of the populations would have only one allele for the bristle morphology gene.

2. Less than 73% of the populations would have only one allele present.

3. More than 73% of the populations would have only one allele present.

4. All of the populations would have only one allele present.

Question

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Biology

19 January, 02:42

In Kerr and Wright's experiment with 96 fruit-fly populations, only 4 males and 4 females bred in each generation. After 16 generations, 73% of their populations had only one allele present for the bristle morphology gene. Which of the following would you expect to occur if they allowed 10 males and 10 females to breed each in generation?

1 About 73% of the populations would have only one allele for the bristle morphology gene.

2. Less than 73% of the populations would have only one allele present.

3. More than 73% of the populations would have only one allele present.

4. All of the populations would have only one allele present.

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Answers (1)

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Morgan Buck · Answer 1

2. Less than 73% of the populations would have only one allele present.

Explanation:

The two alleles chosen do not affect the fitness of flies in the lab environment, so Kerr and Wright could be confident that if changes in the frequency of normal and forked phenotypes occurred, they would not be due to natural selection.

Using a larger breeding population would not be expected to alter the outcome of the experiment.