polyploid

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Related to polyploids: haploid

polyploid

 [pol´e-ploid]
1. characterized by polyploidy.
2. an individual or cell characterized by polyploidy.

pol·yp·loid

(pol'ē-ployd),
Characterized by or pertaining to polyploidy.

polyploid

(pŏl′ē-ploid′)
adj.
Having one or more extra sets of chromosomes: a polyploid species; a polyploid cell.
n.
An organism with more than two sets of chromosomes.

pol′y·ploi′dy n.

polyploid

[pol′əploid]
Etymology: Gk, polys + plous, times
1 n, an individual, organism, strain, or cell that has more than twice the haploid number of chromosomes characteristic of the species. The multiple of the haploid number is denoted by the appropriate prefix, as in triploid, tetraploid, pentaploid, hexaploid, heptaploid, octaploid, and so on. Polyploidy is rare in animals, producing individuals that are abnormal in appearance and usually infertile. It is common in plants, however; such plants generally are larger, have larger cells, and are hardier than diploid plants.
2 adj, also called polyploidic. pertaining to such an individual, organism, strain, or cell. Compare aneuploid. polyploidy, n.

polyploid

adjective Referring to polyploidy, see there.

pol·y·ploid

(pol'i-ployd)
Characterized by or pertaining to polyploidy.

polyploid

Having more than twice the normal HAPLOID number of chromosomes. See also DIPLOID.

polyploid

  1. (of cells or organisms) having three or more complete sets of chromosomes.
  2. an individual or cell of this type. see TRIPLOID, TETRAPLOID.

polyploid

1. characterized by polyploidy.
2. an individual or cell characterized by polyploidy.
References in periodicals archive ?
Relationship and evolutionary origins of polyploid Dryopteris (Dryopteridaceae) from Europe inferred using nuclear pgiC and plastid trnL-F sequence data.
The fraction of the plants that are polyploids is much higher from
It is well known, however, that hybridization in polyploid plants increases the frequency of meiotic abnormalities, compromising seed production (SINGH, 1993).
The structure of heterochromatic DNA is altered in polyploid cells of Drosophila melanogaster.
The scientists' exhaustive survey of published phylogenetic and genomic data also shows that plant lineages starting with a polyploid ancestor appear to be no more successful at spawning species than diploid plants, which have two sets of chromosomes.
1994) and also as forming a polyploid complex having tetraploid, hexaploid, and aneuploid cytotypes (Freckmann & Lelong 2003).
Polyploid cells with increased DNA content usually appear in differentiated and functionally active tissues.
The remaining polyploids are larger still, ranging to up to decaploids (10X) with 700-800 [micro]m diameter megaspores.
The key, Chen and his colleagues studying Arabidopsis plants found, is the increased expression of genes involved in photosynthesis and starch metabolism in hybrids and polyploids.
Until recently, bioinformatic tools were not available for calling and phasing SNP markers in polyploids (Simko, 2004).
Windham, acknowledging his lifelong dedication to the study of cheilanthoid ferns and, in particular, his devotion to understanding the evolution and cytogenetics of apomictic polyploids (including his new namesake in Myriopteris).
Expression of isozyme genes of polyploids in the parthenogenetic Artemia from China.