Chromosome 7

CFTR. The gene encoding a chloride ion channel is defective in patients with cystic fibrosis IMAGE CREDIT: Q. Alawqati, Columbia University, NY, USA. Adapted by K. Sutliff, SCIENCE. OBS. The obese (Ob) mutation in the mouse provides a useful model system for studying human obesity IMAGE CREDIT: Jeff Friedman, Rockfeller University, New York, NY, USA. Reprinted from SCIENCE.