The Differential Distribution of Wing Length in Drosophila , with Larger

question 54

Multiple Choice

The differential distribution of wing length in Drosophila , with larger wings in northern areas and smaller wings in southern climates, provides evidence that:

• A) wing length is not a heritable trait.
• B) the fossil record is usually inaccurate.
• C) the molecular clock cannot be applied to fruit fly traits.
• D) chance is the most important agent in evolutionary change.
• E) natural selection is the most important agent in evolutionary change.

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