Three Populations of Crickets Look Very Similar, but the Males

question 39

Multiple Choice

Three populations of crickets look very similar, but the males have courtship songs that sound different. What function would this difference in song likely serve if the populations came into contact?

• A) both a prezygotic and a postzygotic isolating mechanism
• B) intrasexual selection between a male of one population and males of the other two populations
• C) intersexual selection between a male of one population and females of the other two populations
• D) a prezygotic isolating mechanism
• E) a postzygotic isolating mechanism

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