In a mero-diploid you have one I- and one I+ Repressor gene in the two lac operons. I+ is wild type while I- is a mutant which produces a repressor that doesn’t bind. What would be the functionality of the diploid?(a) Function normally(b) Will be non-functional(c) May or may not function(d) Will have impaired functioningThis question was posed to me in a national level competition.I would like to ask this question from Operons : Lac and Ara in section Gene Expression : Transcription Prokaryotes of Cytogenetics

In a mero-diploid you have one I- and one I+ Repressor gene in the two

1.	In a mero-diploid you have one I- and one I+ Repressor gene in the two lac operons. I+ is wild type while I- is a mutant which produces a repressor that doesn’t bind. What would be the functionality of the diploid?(a) Function normally(b) Will be non-functional(c) May or may not function(d) Will have impaired functioningThis question was posed to me in a national level competition.I would like to ask this question from Operons : Lac and Ara in section Gene Expression : Transcription Prokaryotes of Cytogenetics
Answer» The correct ANSWER is (a) Function normally Easiest explanation: The set of GENE product PRODUCED from the wild type I+ loci will be sufficient to induce repression in both the OPERONS. THUS, the system will not be impaired or non-functional.

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