Polyploidy - Wikipedia
WebPolyploidy. This image shows haploid (single), diploid (double), triploid (triple), and tetraploid (quadruple) sets of chromosomes. Triploid and tetraploid chromosomes are examples of polyploidy. Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes.
Polyploidy | Definition, Examples, Types, & Facts | Britannica
WebPolyploidy, 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 | Learn Science at Scitable - Nature
WebPolyploidy 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. For...
7.4: Polyploidy - Biology LibreTexts
WebMay 15, 2022 · Page ID. Cells (and their owners) are polyploid if they contain more than two haploid (n) sets of chromosomes; that is, their chromosome number is some multiple of n greater than the 2n content of diploid cells. For example, triploid ( 3n) and tetraploid cell ( 4n) cells are polyploid.
The evolutionary significance of polyploidy | Nature Reviews …
WebMay 15, 2017 · Polyploidy, or whole-genome duplication (WGD), is usually an evolutionary dead end. Although polyploidy is a frequent and recurrent phenomenon, the number of WGDs that have become...
Polyploidy: A Biological Force From Cells to Ecosystems - Cell Press
WebJul 6, 2020 · 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 …
Polyploidy: a biological force from cells to ecosystems - PMC
WebPolyploidy (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 ).
Polyploidy as a Fundamental Phenomenon in Evolution, …
WebMar 24, 2022 · 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.
Polyploidy: Current Biology - Cell Press
WebMay 4, 2015 · Polyploidy as a means to increase cell size. One use of polyploidy is to generate large cells, such as mammalian megakaryocytes or the giant cells that contribute to the structure of organs such as Arabidopsis leaves.
From polyploidy to aneuploidy, genome instability and cancer
WebJan 1, 2004 · Polyploidy is a relatively common event in eukaryotic organisms. Polyploid cells can arise during development by cell fusion, endoreplication or an abortive cell cycle. There is also evidence...
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