Cri-du-chat syndrome in humans is caused by the :

Options

A. Fertilisation of an XX egg by a normal Y-bearing sperm
B. Loss of half of the short armo of chrosome 5
C. Loss of half of the long arm of chromosome 5
D. Trisomy of 21st chromosome

Answer

B

Explanation

Cri-du-chat syndrome in humans is caused by ao conspicuous deletion in the short arm of 5th chromosome These individuals are secerely impaired and their crying (cat-like) gives the syndrome it’s name