Genetic Analysis of a Meiotic Recombination Hotspot on Chromosome III of Saccharomyces Cerevisiae |
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Authors: | L S Symington A Brown S G Oliver P Greenwell and T D Petes |
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Institution: | Institute of Cancer Research, Columbia University, New York, New York 10032. |
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Abstract: | In a previous study, we analyzed meiotic recombination events that occurred in the 22-kb region (LEU2 to CEN3) of chromosome III of Saccharomyces cerevisiae. We found one region with an enhanced level of crossovers (a hotspot) and one region with a depressed level of crossovers. In this study, we show that about one-third of the crossovers that occur between LEU2 and CEN3 are initiated in a 1.3-kb region located approximately 6 kb from the centromere. Both crossovers and gene conversion events are initiated at this site. Events initiated at this position can be resolved as crossovers in regions located either centromere-distally or centromere-proximally from the initiation site. |
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