Frequency of Down syndrome increases when the maternal age is :

Options

A. Above 35 years
B. Below 35 years
C. During 1st pregnancy
D. In mothers of at least 3 children

Answer

A

Explanation

A woman’s chances of giving birth to a child with down syndrome increase with age because older eggs have a greater risk of improper chromosome division. A woman’s risk of conceiving a child with down syndrome increases after 35 years of age.