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  4. Operon model for regulation of transcription was proposed by :

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Q. Operon model for regulation of transcription was proposed by :

J & K CETJ & K CET 2004

Solution:

Two French scientists Jacob and Monod (1961) proposed an operon model for regulation of gene activity in prokaryotes. Operon is a part of genetic material (or DNA) which acts as a single regulated unit having one or more structural genes, an operator gene, a promotor gene, a regulator gene, a repressor and an inducer or corepressor.