The Artificial Selection Experiments with Bristle Number in Drosophila Illustrate

question 75

Multiple Choice

The artificial selection experiments with bristle number in Drosophila illustrate which of the following generalities?

• A) In such experiments, it is difficult to obtain individuals with traits that fall outside the range found in the original population.
• B) Populations often contain considerable genetic variation upon which selection can operate.
• C) A particular phenotype can be produced by more than one genotype.
• D) Such experiments usually take thousands of generations to achieve their results.
• E) Bristle number is a genotype, not a phenotype.

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