Some Geographic Areas Contain Two Closely Related Species of Birds

question 63

Multiple Choice

Some geographic areas contain two closely related species of birds (sympatry) , while other areas contain only one of the species (allopatry) . Males from allopatric populations look very similar to each other, but males in the sympatric populations look different from each other and from both allopatric types of males. Which of the following outcomes is most likely if a female in a sympatric area is courted by a male that migrated into the area from an allopatric area?

• A) The female is more likely to mate with the immigrant than with a male native to the area.
• B) The female is less likely to mate with the immigrant than with a male native to the area.
• C) The female is equally likely to mate with the immigrant or with a male native to the area.
• D) The female is likely to mate with both males.

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