Which population is at highest risk for the occurrence of aneuploidy in offspring?

Question

Quizplus · Accepted Answer

As women age, the risk for chromosome abnormalities in their offspring increases, particularly for Down syndrome. The incidence of chromosomal abnormalities in offspring increases from 1 in 1,600 for a 20-year-old mother to 1 in 100 for a 40-year-old mother. The age of the father also plays a role, but the effect is not as significant as that of the mother. Fathers over age 35 have a slightly increased risk of fathering a child with certain chromosomal abnormalities, such as Down syndrome, than younger fathers.

Which Population Is at Highest Risk for the Occurrence of Aneuploidy