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A meiotic mutant of the fission yeast Schizosaccharomyces pombe that produces mature asci containing two diploid spores.

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PMC
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  • Research Article

Abstract

A mutant of the fission yeast Schizosaccharomyces pombe grew normally in the mitotic cycle but produced two-spored asci in the meiosis cycle. These spores were diploid, and the segregation of centromere-linked markers in the dyads was mostly reductional. Only the first meiotic division appears to occur in this tws1 mutant, resulting in enclosure of diploid nuclei into spores.

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