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.
Review Date: 7/25/2007 Reviewed By: Chad Haldeman-Englert, MD, Division of Human Genetics, Children's Hospitalof Philadelphia, Philadelphia, PA. Review provided by VeriMed HealthcareNetwork.