Dictionary of Human Evolution and Biology

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Description of cells with fewer or more chromosomes than the basic diploid number characteristic of the species in question; 44, 45, 47, and 48 would all be aneuploid counts for humans, where the modal diploid number is 2N

46. Noun: aneuploidy. Humans with Down syndrome have 47 chromosomes and are aneuploid.

See euploid and chromatid.

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