10. In Saccharomyces cerevisiae, cell type is determined by
which genes are present at the MAT...
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Biology
10. In Saccharomyces cerevisiae, cell type is determined bywhich genes are present at the MAT locus. Describe the function ofthe a1, ï¡1 and ï¡2 proteins in each of the three cell types(a-haploids, ï¡-haploids and diploids).
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The yeast Saccharomyces cerevisiae is known to be a singlecelled eukaryote having a diploid as well as a haploid mode of existence The mating of yeast only occurs between haploids which can be either the a or alpha mating type and thus leads to display lsimple sexual differentiation Mating type is determined by a single locus MAT which in turn governs the sexual behaviour of both haploid and diploid cells Through a form of genetic recombination haploid yeast can switch mating type as often as every cell cycle The different sets of
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