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Polyploid organisms

DIPLOID An organism or cell having two complete sets of chromosomes, with each set typically of a different parental origin the chromosome number twice that typically present in gametes. (See also HAPLOID and POLYPLOID)... [Pg.240]

Direct measurements of the DNA content per diploid nucleus of various somatic cell types of an organism reveal equal amounts of DNA (Boivin et al., 1948 Mirsky and Ris, 1949 Vendrely, 1955). Only those tissues which contain polyploid or polytene cells show an increased amount of DNA compared to the 2C value present in normal diploid cells. These exceptional cases of increased DNA content have often been interpreted as a result of several additional rounds of replications of the entire genome. Provided that this assumption is correct, such cells would merely differ in quantity and not in quality from the DNA content of diploid somatic cells. [Pg.92]

See other pages where Polyploid organisms is mentioned: [Pg.26]    [Pg.66]    [Pg.26]    [Pg.66]    [Pg.191]    [Pg.156]    [Pg.273]    [Pg.1506]    [Pg.51]    [Pg.51]    [Pg.509]    [Pg.269]    [Pg.58]    [Pg.170]    [Pg.593]    [Pg.572]    [Pg.64]    [Pg.221]    [Pg.117]    [Pg.650]    [Pg.838]    [Pg.2444]    [Pg.77]    [Pg.426]    [Pg.197]    [Pg.251]    [Pg.41]    [Pg.166]    [Pg.195]    [Pg.230]    [Pg.103]   
See also in sourсe #XX -- [ Pg.108 , Pg.115 ]



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Polyploid

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