The DNA-binding site for the lactose repressor was identified by:

A. causing cleavage and subsequent methylation at purine residues.
B. methylating and hence protecting the DNA.
C. comparing DNA sequences protected by wild-type and mutant repressors.
D noting the DNA sequences that were protected from methylation by the repressor.
E. reading the DNA sequence that was methylated by DMS after repressor binding.


D

Biology & Microbiology

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