Which of the following statements regarding Down syndrome is true?

Question

Quizplus · Accepted Answer

It is true that older women are at higher risk of having a child with Down syndrome because the failure of the chromosome to separate properly during meiosis, called nondisjunction, occurs more frequently in older women. The extra chromosome in Down syndrome usually comes from the mother, not the father. And, older women are more likely to have a child with Down syndrome, not younger women. The age of the father may be a factor in certain genetic disorders, but it is not related to the incidence of Down syndrome specifically.

Which of the Following Statements Regarding Down Syndrome Is True