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How does chromosome number change and how are chromosomes altered?

April 26, 2017altered CHROMOSOME chromosomes

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How does chromosome number change and how are chromosomes altered?

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10 Posted

Chromosomes change number is several ways, including: (1) chromosomes can fuse, thereby reducing the number; (2) chromosomes can break into two, thereby increase the number, (3) they can double in number (euploidy) by a failure of meiosis, (4) they can be lost (but usually only after a euploid doubling because otherwise essential genes are likelyto be lost).