TIM VERNON / SCIENCE PHOTO LIBRARY TIM VERNON / SCIENCE PHOTO LIBRARY
Chromosome of supercoiled DNA, conceptual image. Computer artwork of a human chromosome, representing how DNA (deoxyribonucleic acid) is supercoiled (spirals) to be packaged within it. Chromosomes are composed of DNA strands that contain sections, called genes, which encode the body's genetic information. Each chromosome consists of two chromatids joined at their centres by the centromere, which is involved in cell division.
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