Which of the following is TRUE with regard to Down syndrome?
A)Down syndrome afflicts only males.
B)No remedial measures improve the quality of life and adaptive capacity of children with Down syndrome.
C)The risk of having a child with Down syndrome increases with very low or high maternal age.
D)Down syndrome is a sex-linked chromosomal abnormality.

Question

Quizplus · Accepted Answer

The risk of having a child with Down syndrome increases with very low or high maternal age. This is because the incidence of nondisjunction in meiosis increases as the maternal age increases, which may lead to the formation of an egg with an extra copy of chromosome 21, resulting in Down syndrome.

A) is false since Down syndrome can afflict both males and females.
B) is false since early intervention programs and special education can significantly improve the quality of life and adaptive capacity of children with Down syndrome.
D) is false since Down syndrome is caused by the presence of an extra copy of chromosome 21, which is not a sex chromosome.

Which of the Following Is TRUE with Regard to Down