Volpe's Understanding Evolution 7th Edition by Peter Rosenbaum

Exercise 9

In eastern North America, two species of gray tree frogs exist that are phenotypically indistinguishable. One species has 24 chromosomes and the other has 48 chromosomes. What kind of polyploids are they?
A) Haploids and triploids
B) Diploids and tetraploids
C) Triploids and pentaploids
D) Tetraploids and octoploids
E) Monoploids and haploids