In the Northern Regions of Its Range, a Species of Bird

question 143

Multiple Choice

In the northern regions of its range, a species of bird experiences selection for increased size.Farther south, it experiences selection for decreased size.Given some migration across its range, the most likely result is

• A) diversifying selection.
• B) heterozygote advantage.
• C) homozygote advantage.
• D) clinal variation.
• E) Muller's ratchet.

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