Question

Nucleic acid precipitated constitutes of ____________

(a) plasmid DNA

(b) plasmid DNA, along with RNA and chromosomal DNA

(c) rna alone

(d) chromosomal DNA only

I had been asked this question by my college professor while I was bunking the class.

I'd like to ask this question from Purification of Plasmid DNA topic in division Basics of Genetic Engineering of Genetic Engineering

Answer 1

The correct choice is (b) plasmid DNA, along with RNA and chromosomal DNA

To elaborate: Nucleic acid precipitated contains the plasmid DNA and along with it RNA and remnants of chromosomal DNA are also present.  RNA can be removed via adding RNase.