polyploidy


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polyploidy

 [pol´e-ploi″de]
the state of having more than two sets of homologous chromosomes.

pol·y·ploi·dy

(pol'ē-ploy'dē),
The state of a cell nucleus containing three or more haploid sets. Cells containing three, four, five, or six multiples are referred to, respectively, as triploid, tetraploid, pentaploid, or hexaploid.
[poly- + G. ploidēs, in form]

polyploidy

/poly·ploi·dy/ (-ploi″de) possession of more than two sets of homologous chromosomes.

polyploidy

[pol′iploi′dē]
the state or condition of having more than two complete sets of chromosomes.

pol·y·ploi·dy

(pol'ē-ploy'dē)
The state of a cell nucleus containing three or more haploid sets. Cells containing three, four, five, or six multiples are referred to, respectively, as triploid, tetraploid, pentaploid, and hexaploid.
[poly- + G. ploidēs, in form]

polyploidy

the state of having more than two sets of homologous chromosomes; that is a multiple of the normal diploid number. Results from replication within a nucleus without nuclear division.
References in periodicals archive ?
When widespread within a group, hybridization and polyploidy result in a pattern of reticulate evolution that seems to be particularly common among ferns and lycophytes.
identification of the type of polyploidy (auto- or allopolyploid) is
5 Table 4: Alprazolam-genotoxic effects on meristematic onion cells (analyzed 100 mitotic cells per experimental treatment) Concentration Treatment Chromosome Chromosome Polyploidy [micro]g/ml Duration kinetics Agglutination (hour) disorders No.
When allowed to progress naturally, polyploidy is flexible enough to accommodate even unusual brain expansion.
These parthenogenetic and polyploidy forms are often separated into subspecies, but sometimes are identified under "rubidus" s.
The majority of chromosomal anomalies (95%) are numerical, about 60% are trisomies, 20% are represented by X monosomy and another 15% by polyploidy, especially triploidy (9).
Making extra copies of a genome, leading to what's called polyploidy, carries a risk of sterility, yet duplications happen.
neodiploid species with large base numbers reflecting ancient polyploidy status.
aegilopoides [13-14] and recorded the induction of abnormal mitosis including multinucleate condition, formation of large amoeboid nuclei and polyploidy.
Plant biologists have long suspected polyploidy - the heritable acquisition of extra chromosome sets - was a gateway to speciation.
amp; Interferences 1987) (considering induction of polyploidy as a way
A variety of chromosomal aberrations have been documented in early human embryos such as aneuploidy, polyploidy and mosaicism (12) that could be partly attributed to centrosomal dysfunction.