ploidy

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ploi·dy

(ploy'dē),
The number of haploid sets in a cell. Gametes normally contain one; somatic cells two.
See also: polyploidy.
[-ploid + -y, condition]

ploidy

(ploi′dē)
n.
A multiple of the basic number of chromosomes in a cell.

ploidy

[ploi′dē]
Etymology: Gk, eidos, form
the status of a cell nucleus in regard to the number of complete chromosome sets it contains.

ploi·dy

(ploy'dē)
The number of haploid sets in a cell. Gametes normally contain one; autosomal cells, two.
See also: polyploidy
[ploid + -y, condition]

ploidy

The number of copies of the set of chromosomes in a cell. A normal diploid cell with two copies has a ploidy of two; a haploid cell with one copy, such as an ovum or a spermatozoon, has a ploidy of one.

ploidy

the number of chromosome sets making up the total genome of an organism.

Thus the ploidy of normal humans is two and is written 2n. See DIPLOID (1).

References in periodicals archive ?
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de Bary] on chromosome 4 of a dihaploid potato clone (Solanum tuberosum subsp.
The inheritance and expression of sterility in hybrids of dihaploid and cultivated diploid potatoes.
Patterns of variation in potato dihaploid families.
Microspore embryogenesis in anther culture of 3 species of Populus and regeneration of dihaploid plants of Populus trichocarpa.
From the crosses of MD 201 X Callerton and MD 201 X NC 13, dihaploid Populations 1 and 2 were generated, respectively.
Leaf midvein explants from fully expanded leaves of the haploids were cultured to generate dihaploid shoots from spontaneously diploidized tissue (17).
Comparison of different pollen viability assays to evaluate pollen fertility of potato dihaploids.
Using dihaploids and single seed descent during selfing, the latter authors showed that either linkage disequilibrium, pleiotropy, or both factors may cause a genetic correlation, depending on the traits.