Cyto-genetical investigations in some common cucurbits, with special reference to fragmentation of chromosomes as a physical basis of speciation.
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...Biochemical, physiological and cytogenetic studies of this plant have been carried out for several decades (Bhaduri and Bose 1947; Burzyński et al. 2005; Chen et al. 1998; Janicka-Russak et al. 2008; Koo et al. 2002; Migocka and Klobus 2007; Ramachandran and Seshadri 1986), whereas the analysis of…...
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...…to explain it: a fragmentation hypothesis that postulated de novo regeneration of centromeres from n = 7 to n = 12 (Kozhukhow, 1930; Whitaker, 1933; Bhaduri and Bose, 1947) and a fusion hypothesis that postulated that n = 7 was derived from n = 12 via unequal translocation or fusion of…...
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...The origin of the seven cucumber chromosomes has been a long-standing question, with opposite hypotheses being proposed to explain it: a fragmentation hypothesis that postulated de novo regeneration of centromeres from n = 7 to n = 12 (Kozhukhow, 1930; Whitaker, 1933; Bhaduri and Bose, 1947) and a fusion hypothesis that postulated that n = 7 was derived from n = 12 via unequal translocation or fusion of non-homologous chromosomes (Trivedi and Roy, 1970)....
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83 citations
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...If the ancestor species for cucumber and melon contained 2n 14 chromosomes (24), then melon chromosome I (MeI) would be derived from a chromosomal fission event....
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