Question

endA mutation is often induced in host molecules. Choose the correct statement.

(a) It activates the gene for DNA-specific endonuclease

(b) It enhances the yield of plasmid DNA preparations only

(c) It enhances the quality of plasmid DNA preparations only

(d) It enhances both the quality and yield of plasmid DNA preparations

I got this question by my school teacher while I was bunking the class.

Asked question is from Transformation and Hosts topic in section Simple Cloning of Genetic Engineering

Answer 1

Correct answer is (d) It enhances both the quality and yield of plasmid DNA preparations

Explanation: endA mutation is often induced in host molecules. It inactivates the gene for DNA-specific endonuclease. It enhances both the yield and quality of plasmid DNA.