The Artificial Selection Experiments with Bristle Numbers in Drosophila Illustrate

question 43

Multiple Choice

The artificial selection experiments with bristle numbers in Drosophila illustrate which generality?

• 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) Such experiments usually take thousands of generations to achieve their results.
• D) Mutations occur to suit the needs of the population.
• E) Mutations are random with respect to the adaptive needs of organisms.

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