when there was mismatch at the novb locus , with the novb1 mutation either on a plasmid or the chromosome , and the corresponding wild-type gene present in trans , chromosome to plasmid recombination during transformation was much higher than when the genes matched , probably because plasmid to chromosome recombination , eliminating the plasmid , was inhibited by the mismatch .
C1708726
locus
C0008633
chromosome