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(A) $1$. Francois Jacob and Jacques Monod proposed the $Lac\,operon$ model in $1961$ to explain gene regulation in $E. coli$.$2$. Alec Jeffreys is kno

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Francois Jacob and Jacques Monod - $Lac\,operon$

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(A) $1$. Francois Jacob and Jacques Monod proposed the $Lac\,operon$ model in $1961$ to explain gene regulation in $E. coli$.$2$. Alec Jeffreys is known for developing $DNA$ fingerprinting,not for $Streptococcus\,pneumoniae$ (which was studied by Frederick Griffith).$3$. Matthew Meselson and $F$. Stahl provided experimental evidence for the semi-conservative replication of $DNA$ in $E. coli$,not $Pisum\,sativum$ (which was studied by Gregor Mendel).$4$. Alfred Hershey and Martha Chase conducted experiments with bacteriophages to prove that $DNA$ is the genetic material,not $TMV$ (Tobacco Mosaic Virus).

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Similar Questions

Wild-type $E. coli$ cells are grown in a normal medium containing glucose. They are then transferred to a medium containing only lactose as the sugar source. Which of the following changes will occur?

Structural gene is monocistronic $- P$
Structural gene is polycistronic $- Q$
Select the correct option for $P$ and $Q$.
$\quad\quad\quad P \quad\quad Q$

In the $lac$ operon system,the $lac$ gene-$I$ codes for:

In $lac$ operon,$z$ gene codes for:

In $lac$ operon,the gene '$i$' codes for repressor protein,the letter '$i$' indicates . . . . . . .

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