NEET 2002 Biology question

Jacob and Monad studied lactose metabolism in E.Coli and proposed operon concept. Operon concept applicable for : -

(1)All prokaryotes
(2)All prokaryotes and some eukaryotesCorrect
(3)All prokaryotes and all eukaryotes
(4)All prokaryotes and some protozoanes

Answer: (2)

Solution

The operon (a group of structural genes under common control of an operator and promoter, transcribed as a polycistronic mRNA) was proposed by Jacob and Monod (1961) for the lac operon of E. coli. Operons are found in all prokaryotes, and

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Question ID VK-089123