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In a diploid organism, the IND gene encodes a transcriptional activator that binds to an enhancer...

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Biology

In a diploid organism, the IND gene encodes a transcriptionalactivator that binds to an enhancer upstream of the EXP gene. TheREP2 gene encodes a repressor protein that binds to IND and blocksits activation domain in the absence of an inducer called costar.In the presence of costar, REP2 protein no longer blocks theactivation domain of IND. Both genes (IND and RE2) are expressed inall cells. There are complete loss of function mutants availablefor both IND (designated IND-) and REP (REP-).

How much EXP protein would you expect to see in the followingconditions. Briefly justify each answer:

a). wild-type cells, no costar present

b). wild-type cells, costar present

c). homozygous REP2- mutant, costar absent

d). homozygous REP2- mutant, costar present e). homozygous IND-mutant, costar absent

f). homozygous IND- mutant, costar present

Answer & Explanation Solved by verified expert
3.6 Ratings (640 Votes)
Note A basal level of almost every gene is always maintained in a cell Basal level of expression meansthat the protein is present in less than minimum required level thus unable to show desirable effect A Since no costar is present REP 2 protein can easily    See Answer
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