What is the pattern of inheritance for a rare recessive allele?
A) Every affected person has an affected parent.
B) Unaffected parents can produce children who are affected.
C) Affected parents do not produce affected children.
D) Unaffected mothers have affected sons and daughters who are carriers.
E) None of the above

Question

Quizplus · Accepted Answer

For a rare recessive allele, unaffected parents can be carriers of the allele and pass it on to their children. Two carriers (who are unaffected) have a 25% chance of having an affected child. Therefore, unaffected parents can produce affected children.

What Is the Pattern of Inheritance for a Rare Recessive