Canadian Medical Guide > Biological Sciences > Genetic Phenomena > Ploidies Terms and Definitions

Ploidies

Medical Definition:	The degree of replication of the chromosome set in the karyotype.
Previously Indexed:	specific ploidies heading

Ploidies Categories.

	Diploidy - The chromosomal constitution of cells, in which each type of CHROMOSOME is represented twice. Symbol: 2N or 2X.
	Haploidy - The chromosomal constitution of cells, in which each type of CHROMOSOME is represented once. Symbol: N.
	Polyploidy - The chromosomal constitution of a cell containing multiples of the normal number of CHROMOSOMES; includes triploidy (symbol: 3N), tetraploidy (symbol: 4N), etc.

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