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Chromosomes and DNA

Chromosomes and DNA

Overview

Humans typically 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 10/30/2016

Updated by: Anna C. Edens Hurst, MD, MS, Assistant Professor in Medical Genetics, The University of Alabama at Birmingham, Birmingham, AL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.