Drosophila sperm isolation


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As for postmating prezygotic isolation, we compared a copulation duration and b competitive fertilization success of males using within and across population crosses. Indeed, a recent proteomics study found 20 sperm protein spots with altered 2D gel migration patterns in infertile males with otherwise apparently normal amount, motility and morphology of sperm 9 , To the best of our knowledge, this is the only one that provides evidence of postmating isolation. We suggest that unlike in more divergent species comparisons, where sperm competition typically increases reproductive isolation, ejaculate tailoring can reduce the potential for PMPZ isolation when recently diverged populations interbreed. Origin and neofunctionalization of a Drosophila paternal effect gene essential for zygote viability. Key differences are that testes always come in pairs; each testis has a spiral pattern and is more white in color than gut.
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Sperm fate and function in reproductive isolation in Drosophila


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Drosophila bifurca - Wikipedia


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Yet the framework in which we must seek to determine the genetic basis of postzygotic reproductive isolation—the inviability or sterility of interspecific offspring—has been clear from the beginning of the last century. Genes, Genomes, Genetics December 1, vol. Unable to load video.
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Drosophila sperm isolation
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