Although populations of North American apple maggot flies are not geographically isolated,they appear to be in the process of diverging into two new species.Which of the following could be causing speciation between two populations in the lack of geographic isolation?

Question

Quizplus · Accepted Answer

Feeding on two different types of food could create divergent selective pressures on the two populations, leading to genetic and phenotypic differences that could eventually result in speciation. The other choices do not provide a sufficient explanation for speciation in the absence of geographic isolation.

Although Populations of North American Apple Maggot Flies Are Not