Gene library consists of

Gene libray consists of

Assertion. One gene-one enzyme hypothesis of Beadle and Tatum is true in all cases. Reason. An enzyme always consists of more than one polypeptide chain

A gene pool consists of

A gene pool consists of

A gene pool consists of

Assertion (A): Lactose is the substrate for the enzyme beta-galactosidase and it regulates switching on and off of the lac operon. Reason ( R): The lac operon consists of one regulatory gene and three structural genes.

A set of bacterial clones, each containing a plasmid or phage, is called as (A) Gene library (B) Gene pool (C) Genophore (D) Genome

Which of following statement is true for lac operon in E-coli (a) lac operon consists of one regulatory gene and five structural gene. (b) The i gene codes for inducer (c) The z-gene codes for beta -galacosidase (d) A very low level of expression of lac operon has to be present in cell all the time