GWEN SHOCKEY / SCIENCE PHOTO LIBRARY GWEN SHOCKEY / SCIENCE PHOTO LIBRARY
Illustration of telomeres on a chromosome; depicted are the chromatid, centromere and telomeres. Chromatid, one of two strands of DNA that makes up a chromosome. Centromere connects the two chromatids and is the location where fibres attach during cell division. Telomeres, protective molecular caps of repeating DNA located at the ends of chromosomes.
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