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多倍性

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  • Polyploidy - Wikipedia
    Polyploidy is the result of whole-genome duplication during the evolution of species It may occur due to abnormal cell division, either during mitosis, or more commonly from the failure of chromosomes to separate during meiosis or from the fertilization of an egg by more than one sperm [1]
  • Polyploidy | Definition, Examples, Types, Facts | Britannica
    Polyploidy, the condition in which a normally diploid cell or organism acquires one or more additional sets of chromosomes Polyploidy arises as the result of total nondisjunction of chromosomes during mitosis or meiosis
  • Polyploidy: a biological force from cells to ecosystems - PMC
    Polyploidy (whole-genome duplication; WGD, see glossary), defined as having three or more sets of chromosomes, influences organisms in all clades of eukaryotic life and all levels of biological organization, from genes to cells to entire ecosystems (Fig 1)
  • 7. 4: Polyploidy - Biology LibreTexts
    This page discusses polyploidy, the condition of having more than two sets of chromosomes, mainly observed in plants like wheat and sugar cane It can occur naturally through errors in gamete …
  • Polyploidy: Causes, Types and Significance - Online Science Notes
    The phenomenon in which the organism has more than two sets of chromosomes in its cell is called polyploidy and such organisms are called polyploids Polyploids can either be: Triploid: organisms with 3 sets of chromosomes (2n+n) Tetraploid: organisms with 4 sets of chromosomes (2n+2n)
  • Polyploidy | Learn Science at Scitable - Nature
    Polyploidy is the heritable condition of possessing more than two complete sets of chromosomes Polyploids are common among plants, as well as among certain groups of fish and amphibians
  • Polyploidy: Current Biology - Cell Press
    Polyploidy is defined as an increase in genome DNA content: in this Primer, Frawley and Orr-Weaver discuss why somatic polyploidy occurs and how cells become polyploid
  • What Are Polyploid Cells and Why Are They Important?
    Polyploidy is a widespread phenomenon, particularly within the plant kingdom, where it is a major driver of evolution and diversity It is estimated that 30–80% of living plant species are polyploid Many staple agricultural crops, such as wheat, cotton, potatoes, and strawberries, are polyploid, a condition often associated with larger
  • Types Of Polyploidy
    Polyploidy is the condition where an organism possesses more than two sets of chromosomes It is part of the numerical alterations of chromosomes There are different types of polyploidy in nature, which range from having two to several sets of chromosomes in organisms
  • Polyploidy as a Fundamental Phenomenon in Evolution, Development . . .
    Polyploidy, which results from whole-genome duplication, is a fundamental complement to vertical copying Both organismal and cell polyploidy can emerge via premature cell cycle exit or via cell-cell fusion, the latter giving rise to polyploid hybrid organisms and epigenetic hybrids of somatic cells





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