ICSE XII/MCQ Questions for Class 12 Biology Set 4 MCQs :- multiple choice questions and answers. e.g ICSE XII MCQS,ICSE XII Mock Tests , ICSE XII Practice Papers ,ICSE XII Sample Test,ICSE XII Sample questions

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Question 1: Which is not component of lac operon:

Primer gene

Promoter gene

constructive gene

Regulator gene

Total MCQS Questions are 50 in this paper MCQ Questions for Class 12 Biology Set 4