Polyploidy - Wikipedia
网页Polyploidy is a condition in which the cells of an organism have more than two paired sets of chromosomes. Most species whose cells have nuclei ( eukaryotes ) are diploid , meaning they have two complete sets of chromosomes, one from each of two parents; each set contains the same number of chromosomes, and the chromosomes are joined in pairs ...
Polyploidy | Definition, Examples, Types, & Facts | Britannica
网页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. Learn more about polyploidy in this article.
Polyploidy | Learn Science at Scitable - Nature
网页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.
7.4: Polyploidy - Biology LibreTexts
网页2022年5月15日 · Polyploidy in plants; Origin of Polyploidy; Polyploidy and Speciation; Polyploidy in Animals; 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.
Polyploidy: a biological force from cells to ecosystems
网页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).
Polyploidy: A Biological Force From Cells to Ecosystems - Cell Press
网页2020年7月6日 · Polyploidy, resulting from the duplication of the entire genome of an organism or cell, greatly affects genes and genomes, cells and tissues, organisms, and even entire ecosystems. Despite the wide-reaching importance of polyploidy, communication across disciplinary boundaries to identify common themes …
Polyploidy as a Fundamental Phenomenon in Evolution, …
网页2022年3月24日 · 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
网页2015年5月4日 · Polyploidy is defined as an increase in genome DNA content. Throughout the plant and animal kingdoms specific cell types become polyploid as part of their differentiation programs. When this occurs in subsets of tissues within an organism it is termed somatic polyploidy, because it is distinct from …
The evolutionary significance of polyploidy - Nature
网页2017年5月15日 · 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 established...
Polyploidy: A Biological Force From Cells to Ecosystems
网页2020年9月1日 · 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 …