SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY
Human chromosome set. Computer-enhanced image of a complete set (or karyotype) of healthy human chromosomes. Humans have 46 chromosomes in most cells, consisting of 23 pairs made up of one from each parent. Chromosomes contain deoxyribonucleic acid (DNA) which encodes genetic information that is passed from parents to their offspring. The DNA contains sections called genes.
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