Canadian Medical Guide > Diseases > Pathological Conditions, Signs and Symptoms > Pathologic Processes > Chromosome Aberrations > Aneuploidy Terms and Definitions




Aneuploidy

Medical Definition: 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).
Also Called: Aneuploid Cell
Previously Indexed: Chromosome Abnormalities (1966-1967)
Aneuploidy Categories.
Canadian Medical Guide Definition Monosomy - The condition in which one chromosome of a pair is missing. In a normally diploid cell it is represented symbolically as 2N-1.
Canadian Medical Guide Definition Trisomy - The possession of a third chromosome of any one type in an otherwise diploid cell.

Aneuploidy Medical Definitions and Terms

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