The advantage of outbreeding over inbreeding, and why inbreeding is avoided in humans and other primates, is that
A) it reduces the risk of the expression of deleterious alleles.
B) it reduces the risk of heterozygosity.
C) it increases the likelihood of the expression of deleterious alleles.
D) it increases the likelihood of homozygosity.

Question

Quizplus · Accepted Answer

Outbreeding increases genetic diversity, which reduces the likelihood of the expression of deleterious alleles, while inbreeding reduces genetic diversity, increasing the likelihood of the expression of deleterious alleles. Humans and other primates avoid inbreeding to reduce the risk of these deleterious alleles being expressed, which can lead to genetic disorders, reduced fitness, and decreased survival.

The Advantage of Outbreeding Over Inbreeding, and Why Inbreeding Is