Isolation of Meiotic Recombinants from Mouse Sperm

  • Francesca ColeEmail author
  • Maria JasinEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 745)


Homologous recombination during meiosis is critical for the formation of gametes. Recombination is initiated by programmed DNA double-strand breaks which preferentially occur at hotspots dispersed throughout the genome. These double-strand breaks are repaired from the homolog, resulting in either a crossover or noncrossover product. Multiple noncrossover events are required for homolog pairing, and at least one crossover is critical for proper chromosome segregation at the first meiotic division. Consequently, homologous recombination in meiosis occurs at high frequencies. This chapter describes how to characterize crossovers and noncrossovers at a hotspot in mice using allele-specific PCR. Amplification of recombinant products directly from sperm DNA is a powerful approach to determine recombination frequencies and map recombination breakpoints, providing insight into homologous recombination mechanisms.

Key words

Meiotic recombination sperm crossover noncrossover hotspot allele-specific PCR F1 hybrid mice gene conversion homolog 



We thank members of the Jasin Laboratory, especially Erika Brunet, and Scott Keeney and members of his laboratory, especially Liisa Kauppi and Esther de Boer, for comments on the manuscript and suggestions on the techniques described in this chapter. This work was supported by a Ruth L. Kirschstein National Research Service Award F32HD51392 (F.C.) and National Institutes of Health Grant RO1HD40916 (M.J.).


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Developmental Biology ProgramMemorial Sloan-Kettering Cancer CenterNew YorkUSA

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