Small,closed communities of people that intermarry within the group are likely to see a higher occurrence of disease from
A) recessive alleles.
B) dominant alleles.
C) malnutrition.
D) environmental factors.

Question

Small,closed communities of people that intermarry within the group are likely to see a higher occurrence of disease from 
A) recessive alleles.
B) dominant alleles.
C) malnutrition.
D) environmental factors.

Quizplus · Accepted Answer

When small, closed communities intermarry, there is a higher chance of both parents carrying the same recessive allele, which can lead to genetic disorders in their children. This is known as a founder effect, where a small group of individuals becomes isolated from the larger population and experiences genetic drift leading to an increase in recessive alleles. Dominant alleles would not be affected by the group's size or mating patterns, and malnutrition and environmental factors can impact disease occurrence, but not to the same extent as recessive genetic disorders.

Small,closed Communities of People That Intermarry Within the Group Are