HENNING DALHOFF / SCIENCE PHOTO LIBRARY HENNING DALHOFF / SCIENCE PHOTO LIBRARY
Normal and abnormal chromosomes during cell division. Artwork comparing chromosomes during normal cell division (left) and chromosomes during cell division in a case of aneuploidy (right). This is where there is an abnormal number of chromosomes. Here the chromosomes are also damaged. This genetic condition is one of the causes of several types of cancer.
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