نتایج جستجو برای: random mating
تعداد نتایج: 306452 فیلتر نتایج به سال:
VER nearly half a century numerous workers have considered covariances and/or correlations between genotypic values of relatives and have related these population parameters to more basic parameters descriptive of the Mendelian mechanism of inheritance for diploids and the modes of gene action. FISHER (1918) considered random mating populations and developed formulae for the correlations betwee...
Selection for high adult body weight in Drosophila melanogaster was practiced for 18 generations in three selection lines. These lines were genetically similar and of equal size but different in population structure. One line represented a large mass-selected, random-mating population, while the other two lines simulated large populations that had been subdivided into partial isolates or demes....
Cell polarization involves specifying an area on the cell surface and organizing the cytoskeleton towards that landmark. The mechanisms by which external signals are translated into internal landmarks for polarization are poorly understood. The yeast Saccharomyces cerevisiae exhibits polarized growth during mating: the actin cytoskeleton of each cell polarizes towards its partner, presumably to...
The Rhizopus oryzae species complex is a group of zygomycete fungi that are common, cosmopolitan saprotrophs. Some strains are used beneficially for production of Asian fermented foods but they can also act as opportunistic human pathogens. Although R. oryzae reportedly has a heterothallic (+/-) mating system, most strains have not been observed to undergo sexual reproduction and the genetic st...
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