Diseases [C] » Pathological Conditions, Signs and Symptoms [C23] » Pathologic Processes » Chromosome Aberrations » Aneuploidy
Phenomena and Processes [G] » Genetic Phenomena [G05] » Genetic Variation » Mutation » Chromosome Aberrations » Aneuploidy
Phenomena and Processes [G] » Genetic Phenomena [G05] » Ploidies » Aneuploidy
Description
The chromosomal constitution of cells which deviate from the normal by the addition or subtraction of CHROMOSOMES, chromosome pairs, or chromosome fragments. In a normally diploid cell (DIPLOIDY) the loss of a chromosome pair is termed nullisomy (symbol: 2N-2), the loss of a single chromosome is MONOSOMY (symbol: 2N-1), the addition of a chromosome pair is tetrasomy (symbol: 2N+2), the addition of a single chromosome is TRISOMY (symbol: 2N+1). MeSH
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