the radiosensitivity of a reca mutant , deficient both in pre- and post replication recombination repair and sos induction ( inducible error-prone repair ) , was compared to that of a recb mutant which is recombination deficient but sos proficient and to a previously studied dna polymerase 1-deficient mutant ( pola ) which lacks the excision repair pathway .
C1419240
reca
C0034865
recombination