Which Statement Best Describes the Reproductive Isolation Between Populations of Rhagoletis

question 69

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