Question

Which disorder is due to 4th chromosomal abnormality?

• A. Huntington chorea
• B. Cri-du-chat or Cat-cry syndrome
• C. Achondroplasia
• D. Both A and C

Answer 1

The correct option is D Both A and C

Huntington chorea is a progressive brain disorder caused by a single defective gene on chromosome 4.
Cri-du-chat syndrome is a rare genetic disorder due to a missing part caused by the deletion of chromosome 5.
Tay-Sachs disease is a rare autosomal recessive genetic disorder due to hexosaminidase A deficiency.
Achondroplasia is a single gene disorder caused by certain mutations in the gene of chromosome 4.