A condition of mild to severe intellectual disability caused by an extra copy of chromosome 21 is known as
A) fluid intelligence.
B) crystallized intelligence.
C) Down syndrome.
D) savant syndrome.

Question

Quizplus · Accepted Answer

Down syndrome is a genetic disorder caused by an extra copy of chromosome 21. This results in mild to severe intellectual disability, characteristic facial features, and other medical issues such as heart defects and sensory impairments.

A Condition of Mild to Severe Intellectual Disability Caused by an Extra