Abstract:In mitosis, sequences on sister chromatids are preferred as DNA repair templates, whereas in meiosis interhomolog-based repair is promoted. The switch of template preference during homologous recombinational (HR) repair of DNA breaks is a defining event in sexual reproduction. This preference is needed to establish linkages between homologous chromosomes that support meiotic chromosome segregation. In budding yeast, a central activity that enforces meiotic interhomolog bias is encoded in a meiosis-specific pro… Show more
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