Down syndrome is:
A)Characterized by IQ scores between 45 and 55
B)Characterized by amyloid deposits in the brain
C)Caused by an extra copy of Chromosome 21
D)All of the above

Question

Quizplus · Accepted Answer

Down syndrome is caused by an extra copy of Chromosome 21 (C), often leads to intellectual disability with IQ scores typically between 45 and 55 (A), and is associated with amyloid deposits in the brain, which are linked to Alzheimer's disease (B).

Down Syndrome Is