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Ty1 is a retrotransposon of the yeast Saccharomyces cerevisiae whose transposition at new locations in the host genome is activated by stress conditions, such as exposure to UV light, X-rays, nitrogen starvation. In this communication, we supply evidence that cooling for 2 h at +4 degrees C followed by freezing for 1 h at -10 degrees C and 16 h at -20(More)
Although suggested in some studies, the mutagenic effect of freezing has not been proved by induction and isolation of mutants. Using a well-defined genetic model, we supply in this communication evidence for the mutagenic effect of freezing on mitochondrial DNA (mtDNA) of the yeast Saccharomyces cerevisiae. The cooling for 2 h at +4 degrees C, followed by(More)
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