tetraploidy

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tetraploidy

[′te·trə‚plȯid·ē]
(cell and molecular biology)
The occurrence of related forms possessing in the somatic cells chromosome numbers four times the haploid number.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In these cases, the [p57.sup.-] cells are androgenetic (usually diploid) and the [p57.sup.+] cells are biparental (usually also diploid, but some can be triploid or tetraploid or a mixture of these).31,32,34 The p57 immunostain is interpreted as "divergent" when 2 populations of villi, each with different morphologies, exhibit 2 different staining patterns (eg, a typical "negative" result in one set and typical "positive" result in the other set).
Two kinds of warm-season grasses, Chloris gayana Callide' (CG) and Brachiaria ruziziensis, tetraploid strains 'OKI-1' (BR) were studied.
Sampling.--Six populations were used in this study, including two comprised solely of diploid individuals, two comprised solely of tetraploid individuals, and two of mixed-ploidy (i.e., including diploid and tetraploid individuals) (Table 1).
pitardii-dyed section was observed in tetraploid (4n) and hexaploid (6n) camellia plants, respectively.
Table 2: Mean values of Cd contents, RGR, Dry weight, BCF and STI with Cd alone as well as Cd in combination with salicylic acid of tetraploid (Durum-97) and hexaploid (Shafaq-06) calli with standard errors.
in tetraploid potato cultivars because they are easily masked by the
During the study, the research team genetically engineered mice to have bowel cancer, subsequently leading to the creation of more tetraploid cells in their intestinal linings.
Ploidy manipulation: Development of triploid, tetraploid and haploid plants