Definition of hexaploid in English:

hexaploid

Line breaks: hexa|ploid
Pronunciation: /ˈhɛksəplɔɪd
 
/
Genetics

adjective

  • 1(Of a cell or nucleus) containing six homologous sets of chromosomes.
    More example sentences
    • There is a high degree of colinearity among hexaploid wheat chromosomes within each of the seven homoeologous groups.
    • For example, Devos and Gale used the term ‘genome’ to refer to both the entire complement of nuclear DNA in a hexaploid wheat nucleus and to the individual A, B and D ‘genomes’.
    • In all three polyploids, the respective tetraploid and hexaploid genome sizes are slightly larger than the corresponding multiple of the diploid subsp. glaucum.
  • 1.1(Of an organism or species) composed of hexaploid cells.
    More example sentences
    • The observed segmental structure of the Brassica genome strongly suggests that the extant Brassica diploid species evolved from a hexaploid ancestor.
    • Together with other Brassica species, it likely descends from a hexaploid ancestor followed by extensive rearrangements, making its genome essentially a triplicated A. thaliana genome.
    • Recent molecular data indicate differences in molecular chromosome organization among the genomes of diploid, tetraploid, and hexaploid wheat.

noun

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  • A hexaploid organism, variety, or species.
    More example sentences
    • Both parents and all the progenies are hexaploids, as shown twice using flow cytometry.
    • Cytological variation of R. japonica var. japonica in its native regions is high and includes tetraploids, hexaploids, octoploids and decaploids.
    • By 1939, after seven years’ work with repeated crossing of hexaploids and octoploids, a German scientist, Müntzing, was getting promising results, and by 1950 he had produced plants with 90% of the yield of wheat.

Derivatives

hexaploidy

noun
More example sentences
  • Mixoploidy has not been reported for Polycelis nigra, but examples from triploidy to hexaploidy and hyperploidy are frequent.
  • Study of the chromosomes has indicated that the central n = 36 was derived from hexaploidy from n = 12.
  • Wheat's hexaploidy is not homogeneous; three different genomes each contribute 7 chromosomes to give the hexaploid complement of genetic material.

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