(a) Name a genetic RNA and a non-genetic RNA.
(b) Differentiate between prokaryotic mRNA and eukaryotic mRNA on the basis of any one character.
(c) Write the principle involved in the separation of DNA fragments by gel electrophoresis.

(a) Genetic RNA is found in viruses.
Non-genetic RNA are tRNA, mRNA and rRNA.

(b) Prokaryotic mRNA is polycistronic.
Eukaryotic mRNA is monocistronic.

(c) The phosphate backbone imparts negative charge to DNA. When electric field is applied, DNA will migrate toward the positively charged anode.