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In which condition, a trp repressor protein is synthesized but doesnt bind to the trp operator and thus trp operon is transcribed to produce enzymes that synthesize tryptophan for the cell ?

( A ) when tryptophan is present
( B ) when trpR gene is absent
( C ) when tryptophan is lacking
( D ) none
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Ans: ( A ) when tryptophan is present
answered Nov 8, 2016 by suganyadevi.p

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