Question

Reproductive isolation as a result of Dobzhansky-Muller incompatibility is caused by

a. the inability of two or more loci from different lineages to function well together.
b. reduced fertility because of chromosomal mismatch and reorganization.
c. the inability of organisms from different lineages to fit their genitalia together.
d. the failure of individuals of different lineages to recognize one another as potential mates.
e. the lower fitness of hybrids as a result of underdominance.

Answer 1

A

Step-by-step explanation:

An ancestral genotype AABB has different mutations in two separate lineages. In one lineage AA mutates to aa, and in the other BB mutates to bb. Each lineage is interfertile, but when both lineages hybridize, the result (a and b) is incompatible.