منابع مشابه
Genetic Dissection of Segregation Distortion
In(2L + 2R)Cy and In(2LR)Pme are inversion-bearing chromosomes, the former carrying a paracentric inversion in each arm and the latter carrying a long pericentric. Both chromosomes produce normal segregation ratios when present in heterozygous males with certain segregation distorter chromosomes. The apparent suppression of distortion by these chromosomes was long attributed to a failure of syn...
متن کاملApplication of SSR Markers for Genetic Segregation of Some Commercial Date Palm Cultivars
Cultivar identification in micro-propagated date palm seedlings is laborious so that application of molecular markers to facilitate and acceleration of the procedure seems inevitable. Given the need for control the originality of micro- propagated date palm seedlings, the aim of this study was evaluation of SSR markers usability to cultivar identification in micro-propagated date palm seedlings...
متن کاملGenetic Segregation in the Unisexual Wasp Devorgilla.
T H A T genetic mutations are prerequisite to evolution of the species is well recognized. The mechanism by which such mutations are segregated and recombined in bisexual species forms a large part of classical genetics. Less well known are the modifications, in unisexual species, of the same mechanisms to attain comparable ends. The segregation of genes in aberrant cases of diploid parthenogen...
متن کاملGenetic mapping by duplication segregation in Salmonella enterica.
MudP and MudQ elements were used to induce duplications in Salmonella enterica by formation of a triple crossover between two transduced fragments and the host chromosome. The large size (36 kb) of MudP and MudQ is a favorable trait for duplication formation, probably because homology length is a limiting factor for the central crossover. Additional requirements are a multiplicity of infection ...
متن کاملAsymmetric Strand Segregation: Epigenetic Costs of Genetic Fidelity?
Asymmetric strand segregation has been proposed as a mechanism to minimize effective mutation rates in epithelial tissues. Under asymmetric strand segregation, the double-stranded molecule that contains the oldest DNA strand is preferentially targeted to the somatic stem cell after each round of DNA replication. This oldest DNA strand is expected to have fewer errors than younger strands becaus...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 1921
ISSN: 0003-0147,1537-5323
DOI: 10.1086/279788