| 释义 |
Definition of hexaploid in English: hexaploidadjective ˈhɛksəplɔɪdˈheksəˌploid Genetics 1(of a cell or nucleus) containing six homologous sets of chromosomes. Example sentencesExamples - However, even with the large size of this hexaploid genome, the genes within the three component genomes remain largely colinear.
- In all three polyploids, the respective tetraploid and hexaploid genome sizes are slightly larger than the corresponding multiple of the diploid subsp. glaucum.
- 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’.
- The hexaploid wheat genome is composed of three related diploid genomes designated A, B, and D with seven chromosomes each.
- There is a high degree of colinearity among hexaploid wheat chromosomes within each of the seven homoeologous groups.
- 1.1 (of an organism or species) composed of hexaploid cells.
Example sentencesExamples - The observed segmental structure of the Brassica genome strongly suggests that the extant Brassica diploid species evolved from a hexaploid ancestor.
- Our genetic analysis detected some aberrations, such as the presence of four hexaploid offspring in the progeny study.
- Recent molecular data indicate differences in molecular chromosome organization among the genomes of diploid, tetraploid, and hexaploid wheat.
- Because the present study analysed only one accession in each hexaploid species, it is not known whether these variations are species-specific or not.
- 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.
noun ˈhɛksəplɔɪdˈheksəˌploid Genetics A hexaploid organism, variety, or species. Example sentencesExamples - LAGERCRANTZ 1998 suggested that the base diploid Brassica genome evolved from an ancient hexaploid with three highly rearranged A. thaliana-like genomes.
- Both parents and all the progenies are hexaploids, as shown twice using flow cytometry.
- It is a hexaploid that is thought to be produced by two sequential hybridization events.
- 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 noun Genetics Wheat's hexaploidy is not homogeneous; three different genomes each contribute 7 chromosomes to give the hexaploid complement of genetic material. Example sentencesExamples - Winter wheat is much more resistant than spring barley due to the hexaploidy of its genome (wheat has 42 chromosomes and barley has 14 chromosomes).
- Study of the chromosomes has indicated that the central n = 36 was derived from hexaploidy from n = 12.
- Mixoploidy has not been reported for Polycelis nigra, but examples from triploidy to hexaploidy and hyperploidy are frequent.
- However, wheat is a difficult plant in which to undertake targeted gene cloning projects, due to its large genome resulting from hexaploidy and a high fraction of repetitive DNA.
Definition of hexaploid in US English: hexaploidadjectiveˈheksəˌploid Genetics 1(of a cell or nucleus) containing six homologous sets of chromosomes. Example sentencesExamples - In all three polyploids, the respective tetraploid and hexaploid genome sizes are slightly larger than the corresponding multiple of the diploid subsp. glaucum.
- However, even with the large size of this hexaploid genome, the genes within the three component genomes remain largely colinear.
- 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’.
- The hexaploid wheat genome is composed of three related diploid genomes designated A, B, and D with seven chromosomes each.
- 1.1 (of an organism or species) composed of hexaploid cells.
Example sentencesExamples - Our genetic analysis detected some aberrations, such as the presence of four hexaploid offspring in the progeny study.
- Recent molecular data indicate differences in molecular chromosome organization among the genomes of diploid, tetraploid, and hexaploid wheat.
- 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.
- Because the present study analysed only one accession in each hexaploid species, it is not known whether these variations are species-specific or not.
- The observed segmental structure of the Brassica genome strongly suggests that the extant Brassica diploid species evolved from a hexaploid ancestor.
nounˈheksəˌploid Genetics A hexaploid organism, variety, or species. Example sentencesExamples - 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.
- LAGERCRANTZ 1998 suggested that the base diploid Brassica genome evolved from an ancient hexaploid with three highly rearranged A. thaliana-like genomes.
- It is a hexaploid that is thought to be produced by two sequential hybridization events.
- 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.
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