Which Statement Best Describes the Reproductive Isolation Between Populations of Rhagoletis

question 13

Multiple Choice

Which statement best describes the reproductive isolation between populations of Rhagoletis flies, one of which is found on apple trees and the other that is found on hawthorn trees?

• A) Hawthorn trees and apple trees grow in different areas, so the two populations do not encounter each other.
• B) Apple- liking males are more likely to encounter apple- liking females than hawthorn- liking females.
• C) Eggs laid by female flies mated with a male from the "wrong" population do not develop.
• D) Hybrid offspring of the two populations are sterile.
• E) Male flies of one population cannot physically mate with females from the other population.

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