Which disease is caused by the presence of extra chromosome 21, also known as Trisomy 21?

A)
Down's Syndrome
B)
Addison's Disease
C)
Parkinson's Disease
D)
Korsakoff's Syndrome

Correct Answer :   Down's Syndrome

Down syndrome (trisomy 21) is a genetic disorder caused by the presence of all or a portion of a third chromosome 21. Patients typically present with mild to moderate intellectual disability, growth retardation, and characteristic facial features.

Published On : May 30, 2021