Which of the following is a genetic disorder that is caused by chromosomal abnormalities?
A) Down syndrome
B) Fragile-X syndrome
C) Autism spectrum disorder
D) both A and B

Question

Quizplus · Accepted Answer

Down syndrome and Fragile-X syndrome are both genetic disorders caused by chromosomal abnormalities. Down syndrome is caused by the presence of an extra copy of chromosome 21, while Fragile-X syndrome is caused by a mutation in the FMR1 gene on the X chromosome. Autism spectrum disorder, on the other hand, is a neurodevelopmental disorder that is believed to be caused by a combination of genetic and environmental factors.

Which of the Following Is a Genetic Disorder That Is