The genes F and G act in accordance with the Dobzhansky-Muller model leading to sterility in hybrids between two species of monkeyflowers.Any combination of the F2 and the G1 alleles causes hybrids to be sterile.Based on the Dobzhansky-Muller model, which genotype should have low fitness?
A) F1F1; G1G1
B) F2F2; G1G2
C) F0F0; G2G2
D) F2F2; G0G0
E) F2F2; G0G2

Question

Quizplus · Accepted Answer

The Dobzhansky-Muller model explains hybrid incompatibility through interactions between genes from different species. In this case, any combination of F2 and G1 alleles causes sterility, indicating hybrids with these alleles have low fitness. Thus, genotype F2F2; G1G2 would have low fitness due to the presence of both F2 and G1 alleles.

The Genes F and G Act in Accordance with the Dobzhansky-Muller