A child is diagnosed with cystic fibrosis.History reveals that the child's parents are siblings.Cystic fibrosis was most likely the result of:

Question

Quizplus · Accepted Answer

Consanguinity refers to the mating of two related individuals,and the offspring of such matings are said to be inbred.Consanguineous matings produce a significant increase in recessive disorders and are seen most often in pedigrees for rare recessive disorders.
X inactivation occurs when one X chromosome in the somatic cells of females is permanently inactivated.
Genomic imprinting is related to methylation and other changes.
Obligate carriers are those who have an affected parent and affected children and,therefore,must themselves carry the mutation.

A Child Is Diagnosed with Cystic Fibrosis