Rhagoletis Pomonella in the Hudson River Valley of New York

Rhagoletis pomonella in the Hudson River Valley of New York State

A) is an example of a species in which allopatric speciation may be occurring.
B) has formed two subpopulations because of a geological barrier that separates them.
C) has formed two groups based on their preference for either apple or hawthorn fruits.
D) has formed new species by polyploidy.
E) has formed two groups with similar allele frequencies.