S and T are products of a biochemical pathway. A different enzyme, coded for by different specific genes, catalyses each step in the pathway.
What is the possible outcome to the pathway if a mutation in gene 3 leads to an inactive enzyme?
1 )
There is a decrease in the activity of gene 1 and gene 2.
2 )
There is an accumulation of product S.
3 )
There is an increase in the rate of reaction of enzyme 4.
There is an increase in the production of T.
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