+91-8076753736 support@wiredfaculty.com
logo
logo

Sponsor Area

Molecular Basis Of Inheritance

Question
CBSEENBI12002606
Wired Faculty App

The lac operon consists of 

  • four regulatory genes only

  • one regulatory gene and three structural genes

  • two regulatory genes and two structural genes

  • three regulatory genes and three structural genes

Solution

B.

one regulatory gene and three structural genes

Lac operon is the operon that regulates lactose metabolism in the bacterium Escherichia coli. Its form wast first postulated in 1961 by Francois Jacob and Jacques Monod to explain the control of β- galactosidase synthesis and for this work, they were awarded Nobel Prize. Lac operon system or inducible operon system consists of regulator gene (i) promoter gene (z, y and a), repressor protein and inducer.
Drosophila

Some More Questions From Molecular Basis of Inheritance Chapter

Which was first genetic material ?

Suggest one evidence to prove that RNA was first genetic material.

Why was RNA unstable ?

What made DNA more preferrable as genetic material ?

Process of replication is completed in how much time in E.coli ?

What is average rate of polymerization ?

List three components of transcription unit.

Which RNA acts as an adapter ?

Name three kinds of polymerases.

What is splicing ?

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation