Answers are grounded in this paper and cite their sources.
We replaced the Escherichia coli lexA gene by a segment of DNA coding for resistance to spectinomycin and streptomycin. The use of this segment expands the range of selectable markers usable for allele replacement. The availability of this null lexA mutation will facilitate genetic analysis of lexA and the SOS regulon.
No takes yet. Share an insight, caveat, or question.
Hill et al. (1988) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: