Chromosomes and DNA
Humans have 46 chromosomes. There are a total of 23 pairs of chromosomes or 46 total chromosomes. Chromosomes are made up of long strands of DNA which contain all the body’s genes.
Last reviewed 10/31/2012 by Chad Haldeman-Englert, MD, FACMG, Wake Forest School of Medicine, Department of Pediatrics, Section on Medical Genetics, Winston-Salem, NC. Review provided by VeriMed Healthcare Network. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.
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