MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Chromosomes and DNA (deoxyribonucleic acid) molecules on a DNA autoradiogram, computer artwork. Chromosomes are composed of deoxyribonucleic acid (DNA) coiled around proteins. DNA contains sections, called genes, which encode the body's genetic information, determining each cell's structure, function and behaviour. Autoradiograms show the order of nucleotide bases (basic building blocks) in a DNA sample.
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