Three Mutations Were Obtained in a Bacterial Gene

question 42

Essay

Three mutations were obtained in a bacterial gene.An antibody is available for the protein product of this gene.Both Northern analysis (RNA separated by electrophoresis,blotted,and probed with DNA)and Western analysis (proteins separated by electrophoresis,blotted,and probed with antibodies)were performed on the mutants.The results are summarized below.
For each mutation,what kind of mutation occurred and how do you know it?
a)Mutant 1 b)Mutant 2 c)Mutant 3

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