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Showing 1 to 8 of 8 for “"allopolyploids"”.
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The Role of Carotenoid Cleavage Dioxygenase 4 in Flower Color of the Allopolyploid Brassica napus
<p>Allopolyploids are formed by interspecific hybridization and whole genome duplication, with the resulting organism contains multiple distinct subgenomes in one nucleus. Subgenomic interactions result in massive genetic and epigenetic reconstruction, contributing to variable phenotypic traits …
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Determining the Fate of Hybridized Genomes in the Allopolyploid Brassica napus
… and whole genome duplication. While allopolyploids may display increased vigor relative to their progenitors, they can also face challenges to fertility following hybridization. Genetic changes in allopolyploids result from recombination between the hybridized subgenomes, which can …
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Mentha (Lamiaceae) Phylogenetic Analysis Using Chloroplast TRNL-TRNF and Nuclear Ribosomal DNA ITS Sequences
… of hybridization for the putative stabilized allopolyploids (M spicata and M. canadensis), and determine the ancestral base chromosome number using DNA sequence data from the chloroplast trnL-trnF and nuclear ribosomal internal transcribed spacer (ITS) regions. Based on trnL-trnF data, Mentha …
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Systematic implications of isozyme number variation in Tribe Brassiceae (Brassicaceae).
… study also compared allozyme patterns of select allopolyploids and their proposed parental species. These analyses verified Diplotaxis tenuifolia (n = 11) and D. viminea (n = 10), and D. erucoides (n = 7) and Erucastrum nasturtiifolium (n = 8) as respective parental taxa of D. muralis (n = 10 + …
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Navigating through the uncertainty of genotyping-by-sequencing data in polyploids
… remain a challenge for both recent and ancient allopolyploids (e.g. wheat, maize, soybean, Miscanthus), particularly where the reference genome contains highly similar paralogous sequences that do not pair at meiosis. Alignment of sequence tags to the appropriate position within highly …
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Molecular Systematics of <i>Isoëtes</i> (Isoëtaceae) in Eastern North America
… through allopatric speciation, and fertile allopolyploids derived from whole genome duplication following primary hybridization. Phylogenies inferred from whole chloroplast genome DNA sequences using maximum-likelihood and Bayesian inference were fully resolved with high support. Ancestral …
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Whole genome approaches to identify genes involved in early meiosis.
… positioned). Further complexities arise in allopolyploids such as bread wheat, which contains three very similar genomes from slightly diverged progenitors. Despite having homoeologous chromosomes present in the same nucleus, bread wheat displays diploid-like behaviour during meiosis I. Such …
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The Role of Polyploidy in Phenotypic and Genomic Evolution in the Shy Monkeyflower, <i>Mimulus sookensis<i>
… How does chromosome pairing during meiosis in allopolyploids affect the magnitude of genetic variation?, (2) How does the genome of polyploids evolve following formation, and what genetic mechanisms govern this evolution?, and (3) How does genetic and genomic evolution in polyploids affect …