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 ?
All scallops sampled were visually inspected to establish the gonad macrostructure and to obtain a drawing of the characteristic gonad of each ploidy group.
In this study, environment variables influenced growth rate and survival to a much greater extent than oyster ploidy.
Postzygotic isolation varies by ploidy level within a polyploid complex.
that a linear correlation between gene expression and ploidy was rarely
The knowledge of the ploidy level, beyond the value that presents itself, is an essential piece of information for evaluating evolutionary processes in the organisms.
Flow cytometry, in which the ploidy level and DNA contents of cells are compared to a known control, has been the preferred direct method for triploid verification in oysters because hundreds of samples can be analyzed at the same time and the relative percentage of triploid induction can also be analyzed (Harrell et al.
Biocontrol activity and molecular characterization of colchicine-induced ploidy yeast strains of Tilletiopsispallescens on powdery mildew and Rhodotorulaglutinis on grey mould diseases of green house sweet pepper.
In most studies so far histopathologic criteria of Weiss appeared to predict survival and prognosis of ACC most accurately whereas immunologic markers, cytoskeletal markers, DNA ploidy, cell phase markers and oncogenic probes have yielded inconsistent results (7,9-11).
13) Current ancillary test methods include p57 immunohistochemistry, chromosome analysis, fluorescence in situ hybridization (FISH), ploidy determination by flow cytometry or digital image analysis, and microsatellite genotyping by multiplex polymerase chain reaction (PCR) amplification of short tandem repeats (STRs).