Principle of Inheritance and VariationHard
Question
The wild type E.coli cells are growing in normal medium with glucose. They are transferred to a medium containing only lactose as sugar. Which of the following changes takws place ?
Options
A.The lac operon is repressed
B.All operons are induced
C.The lac operon is induced
D.E,coli cells stop dividing
Solution
Inducible genes are the genes which remain inactive or repressed in a cell and can be activated when a certain substrate is to be metablised. It has been when lactose is added to the medium of E.coli the operon is induced and synthesis of enzymes required for degradation lactose to glucose and galactose starts.
Create a free account to view solution
View Solution FreeTopic: Principle of Inheritance and Variation·Practice all Principle of Inheritance and Variation questions
More Principle of Inheritance and Variation Questions
The phenomenon of a single gene regulating several phenotypes is called...Two crosses between the same pair of genotypes in which the sources of the gamentes are reversed in one cross, is known ...If there are four possible allelic forms for the gene controlling ABO blood group then what will be the number of possib...When two genetic loci produce identical phenotypes in cis and trans position, they are...Which one of the following characters studied by Mendel in graden pea was found to be dominant ?...