Author Question: ____ is the most common cause of inherited intellectual disability. a. Down syndrome b. Fragile-X ... (Read 36 times)

nelaaney · **on:** Jun 22, 2018

____ is the most common cause of inherited intellectual disability.

a. Down syndrome
b. Fragile-X syndrome
c. Prader-Willi syndrome
d. Phenylketonuria

Question 2

Down syndrome occurs more often with older mothers than younger mothers because_______.

a. chromosomal nondisjunction increases with maternal age
b. women's ova become generally less healthy with age
c. older women are generally less healthy than younger women
d. younger mothers do not carry genes containing chromosome issues