What is usually true about autosomal recessive disorders?
A) Affected parents have unaffected children.
B) Unaffected parents can have affected children.
C) Autosomal recessive disorders are always the result of matings between individuals who are related to each other.
D) All relatives of affected parents will always have affected children.
E) None of these statements are true.

Question

Quizplus · Accepted Answer

Autosomal recessive disorders can occur in individuals who have unaffected parents; two unaffected individuals who are carriers of the gene can have an affected child.

The other choices are not generally true for autosomal recessive disorders. Some affected parents may have unaffected children if their spouse is not a carrier, but if they both carry the gene, their children may be affected. Autosomal recessive disorders can occur in non-related individuals and not all relatives of affected parents will have affected children.

What Is Usually True About Autosomal Recessive Disorders