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Insights into population genetics and evolution of polyploids and their ancestors
Molecular Ecology Resources, 2018 We have developed the first comprehensive simulator for polyploid genomes (PolySim) and demonstrated its value by performing large-scale simulations to examine the effect of different population parameters on the evolution of polyploids.
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DNA Damage and Polyploidization
2010A growing body of evidence indicates that polyploidization triggers chromosomal instability and contributes to tumorigenesis. DNA damage is increasingly being recognized for its roles in promoting polyploidization. Although elegant mechanisms known as the DNA damage checkpoints are responsible for halting the cell cycle after DNA damage, agents that ...
Chow, Jeremy Pak Hong +1 more
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1980
Polyploidy, a multiplication of the whole chromosomal complement, is a very widespread phenomenon in higher plants. Natural polyploids have been suggested to be more successful than their diploid progenitors under certain conditions. This success may be due to "balance hybridity," i.e., the combination of the advantage of hybridity together with the ...
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Polyploidy, a multiplication of the whole chromosomal complement, is a very widespread phenomenon in higher plants. Natural polyploids have been suggested to be more successful than their diploid progenitors under certain conditions. This success may be due to "balance hybridity," i.e., the combination of the advantage of hybridity together with the ...
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1980
1. Polyploidy is a conspicuous feature of chromosomal evolution in higher plants. It is common in many genera, and numerous species are characterized by diploid and polyploid races. 2. Polyploid evolution is a process not an event. 3. Polyploid may involve somatic chromsome doubling or sexual functioning of cytologically non-reduced gametes.
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1. Polyploidy is a conspicuous feature of chromosomal evolution in higher plants. It is common in many genera, and numerous species are characterized by diploid and polyploid races. 2. Polyploid evolution is a process not an event. 3. Polyploid may involve somatic chromsome doubling or sexual functioning of cytologically non-reduced gametes.
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Genome evolution in polyploids
Plant Molecular Biology, 2000Polyploidy is a prominent process in plants and has been significant in the evolutionary history of vertebrates and other eukaryotes. In plants, interdisciplinary approaches combining phylogenetic and molecular genetic perspectives have enhanced our awareness of the myriad genetic interactions made possible by polyploidy. Here, processes and mechanisms
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Polyploidization of liver cells
2010Eukaryotic organisms usually contain a diploid complement of chromosomes. However, there are a number of exceptions. Organisms containing an increase in DNA content by whole number multiples of the entire set of chromosomes are defined as polyploid. Cells that contain more than two sets of chromosomes were first observed in plants about a century ago ...
Séverine, Celton-Morizur +1 more
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The Genetic Algebra of Polyploids
Proceedings of the London Mathematical Society, 1980This paper considers the genetic algebra of polyploids for the case of \(1\) locus and \(2\) alleles and \(r\)-ploidy. The explicit structure for the \(n\)-th generation \(x_n\), is obtained. By working in a canonical basis linearisation of the quadratic transformation \(\varphi: x\to x^2\), denoting random mating, is easily effected and using the ...
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Disentangling a polyploid genome
Nature Plants, 2017The sequencing and draft assembly of the sweet potato genome has resolved much of its complex genetic redundancies, allowing a better inference of the botanical origin of the staple crop.
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Morphological and anatomical characterization of colchicine-induced polyploids in watermelon
Horticulture Environment and Biotechnology, 2023Md.Noor E Azam Khan +9 more
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Challenges of Genotyping Polyploid Species
2014Most plant species are known to be either ancient or recent polyploids, containing more than one genome as a result of past interspecific hybridization events (allopolyploidy) and/or genome doubling (autopolyploidy). Genotyping in polyploid species offers a set of unique challenges.
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