Gene mutations in Cystic fibrosis occurs at -: (A) Sho arm of chromosome 7, (B) Long arm os chromosome 5, (C) Long arm of chromosome 7, (D) Sho arm of chromosome .3
Answer is C. In cystic fibrosis, CFTR gene mutation occurs on the long arm of chromosome 7 Reference: Ghai essential pediatrics, 9 th edition, page 392