Question

There are several possible mutations in the trp operon: trpP -is a mutation in the promoter sequence that prevents RNA polymerase from binding to the promoter and initiate transcription of the trp operon genes. trpOcis a mutation in the operator sequence that prevents the trp repressor protein from binding to the operator to block transcription of the trp operon genes. trpR-is a mutation in the repressor protein that either prevents repressor protein from being made or produces a mutant repressor that cannot bind to the operator region. trpRsis a mutation in the repressor protein that causes the repressor to be more sensitive to tryptophan levels. This mutant repressor binds the operator region even when tryptophan is low.

Part A Determine whether each mutation is a trans-acting factor or a cis-acting factor, and whether it is dominant or recessive to wild type. Drag each mutation into the correct bin.

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There are several possible mutations in the trp operon: trpP is a mutation in the promoter sequence that prevents RNA polymerase from binding to the promoter and initiate transcription of the trp operon genes. trpo is a mutation in the operator sequence that prevents the trp repressor protein from binding to the operator to block transcription of the trp operon genes. trpR is a mutation in the repressor protein that either prevents repressor protein from being made or produces a mutant repressor that cannot bind to the operator region. trpR is a mutation in the repressor protein that causes the repressor to be more sensitive to tryptophan levels. This mutant repressor binds the operator region even when tryptophan is low. Part A Determine whether each mutation is a trans-acting factor or a cis-acting factor and whether it is dominant or recessive to wild type. Drag each mutation into the correct bin trpPr trpRT trpRs trpoo Dominant/Trans Recessive/Trans Dominant/Cis Recessive/Cis My Answers Give up Submit

Answer 1

Dominant/TransRecessive/Trans Dominant/Cis Recessive/Cis trpRS trpR trpo trpP