Down syndrome:
A) is a congenital disorder that causes mild to moderate intellectual disabilities.
B) affects males more than females.
C) occurs when an individual gets an extra copy of chromosome 23.
D) results in a life expectancy of about 18 years.

Question

Quizplus · Accepted Answer

Down syndrome is a congenital disorder caused by an extra copy of chromosome 21, not 23, leading to mild to moderate intellectual disabilities. It affects males and females equally and does not limit life expectancy to 18 years; many individuals with Down syndrome live into their 60s and beyond.

Down Syndrome