How is Recombination-Repair used for Double-Strand Breaks in Eukaryotes?

-The yeast RAD mutations, identified by radiation-sensitive phenotypes, are in genes that code for repair systems. -The RAD52 group of genes is required for recombination repair. -The MRX (yeast) or MRN (mammals) complex is required to form a single-stranded region at each DNA end.