Studies of enzyme genotypes and flight in Colias butterflies showed that
A) males that are heterozygous at PGI are always inferior in flight compared to homozygotes.
B) males that are heterozygous at PGI have greater mating success than homozygous males because they are able to fly farther in a broad range of temperatures.
C) genotypes at PGI do not affect flight ability.
D) flight ability and mating success are not correlated.
E) flight ability can be explained by Muller's ratchet.

Question

Quizplus · Accepted Answer

The studies showed that heterozygous males at PGI had greater mating success because they were able to fly farther in a broad range of temperatures, indicating that their flight ability was not inferior to homozygotes. This suggests that the PGI genotypes do affect flight ability and can impact mating success. There is no mention of option A or E, and option D is contradicted by the information given.

Studies of Enzyme Genotypes and Flight in Colias Butterflies Showed