autopolyploid


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au·to·pol·y·ploid

(aw'tō-pol'i-ployd),
An autoploid having two or more multiples of the haploid sets of chromosomes.

autopolyploid

(ô′tō-pŏl′ə-ploid′)
adj.
Having more than two sets of chromosomes all derived from the same species.
n.
An organism having more than two sets of chromosomes, all of which were derived from the same species.

au′to·pol′y·ploi′dy n.

autopolyploid

[ô′tōpol′iploid]
Etymology: Gk, autos + polyploos, many times, eidos form
1 an individual, organism, strain, or cell that has more than two genetically identical or nearly identical sets of chromosomes that are derived from the same ancestral species. They result from the duplication of the haploid chromosome set and are referred to as autotriploid, autotetraploid, autopentaploid, autohexaploid, and so on, depending on the number of multiples of the haploid chromosomes they contain. Also called autopolyploidic. autopolyploidy, n.
2 pertaining to such an individual, organism, strain, or cell. Compare allopolyploid. See also allodiploid.
Autopolyploidclick for a larger image
Fig. 57 Autopolyploid . Types of autopolyploid compared with normal diploid.

autopolyploid

a type of POLYPLOID in which there has been duplication of the number of each chromosome, all chromosomes coming from the same original species. For example, in Fig. 57, A represents one complete set of chromosomes. Like an ALLOPOLYPLOID, an autopolyploid is a mechanism for creating new species, particularly in plants. Allopolyploids are more successful, perhaps because autopolyploid chromosomes have pairing difficulties at MEIOSIS.
References in periodicals archive ?
The strongest evidence for an autopolyploid mode of origin of H.
Therefore, allopolyploidy can result in "fixed" heterozygosity which would not be expected in a autopolyploid.
Mating systems in allopolyploids and autopolyploids generally compliment the type of polyploidy exhibited.
Olah and DeFilipps (1968) concluded that this species is a polyhaploid derived from the autopolyploid D.
The evolution of autopolyploids in many ferns, which is often associated with distinctive reproductive strategies, increases the likelihood of reproductive barriers and thus the potential for the development of spatial structure (Trewick et al.
Other models for autopolyploids have been published (e.