double mutants carrying both ruv and uvr mutations are considerably more sensitive to uv radiation than the single mutants , but there is no additive effect of ruv with reca , recf , recb , or recc mutations . ruv mutations have little effect on conjugal recombination in wild-type strains but confer recombination deficiency and extreme sensitivity to ionizing radiation in recbc sbcb strains .
C1419240
reca
C0034865
recombination