The most common genetic cause of mild to moderate intellectual disabilities is
A)Autism
B)Down syndrome
C)Hydrocephalus
D)Spina bifida

Question

Quizplus · Accepted Answer

Down syndrome is caused by an extra copy of chromosome 21, leading to mild to moderate intellectual disabilities. Autism, hydrocephalus, and spina bifida can also result in cognitive impairments, but they are not primarily genetic causes.

The Most Common Genetic Cause of Mild to Moderate Intellectual