A) regulator, operator and repressive gene
B) regulator, structural and operator gene
C) regulator, structural, operator and promoter gene
D) regulator, structural and promoter gene
Correct Answer: C
Solution :
Jacob and Monod (1961) observed that genetic material in prokaryotes has some regulated units called operons. Operon consists of operator gene, promoter gene, regulator gene, one or more structural genes a represser and an inducer.
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