Ques. Cri-du-chat syndrome in humans is caused by the
A. trisomy of 21st chromosome
B. fertilisation of an XX egg by a normal Y-bearing sperm
C. loss of half of the short arm of chromosome 5
D. loss of half of the long arm of chromosome 5.
Answer:C
Ques. Cri-du-chat syndrome in humans is caused by the
A. trisomy of 21st chromosome B. fertilisation of an XX egg by a normal Y-bearing sperm C. loss of half of the short arm of chromosome 5 D. loss of half of the long arm of chromosome 5.