Raj was a known sportsman in his school.While returning home he found unknown miscreants beating a young fellow.He tried to drive them off but by that time the fellow died of injury.The police arrested Raj and he was put on trial.The judge being convinced by Raj's plea, ordered for DNA fingerprinting reports.
(i) What is the basis of DNA fingerprinting?
(ii) Explain the steps in DNA fingerprinting.
(iii) Write the applications of DNA fingerprinting.
(iv) Raj's fingerprints on the dead body were sufficient to convict him but the judge asked for authentic proof.What values can observed by the judge?

The biology teacher asked her students to verify the experiment on transformation principle in bacteria to establish DNA as genetic material.The class was divided into groups.The teacher asked them to submit the reports.Group 2 did not use mouse and did not repeat GRiffith's experiment.The teacher praised them.
(i) Which experiment did they perform?
(ii) Explain the experiment in brief.
(iii) Who and when performed the transformation principle experiment?
(iv) What values did students of group 2 exhibit?

(i)  Explain the process of DNA replication with the help of a schematic diagram.
(ii) In which phase of the cell cycle does replication occur in eukaryotes? What would happen if cell division is not followed after DNA replication?

Differentiate between the following
(a) Repetitive DNA and Satellite DNA
(b) mRNA and tRNA
(c) Template strand and Coding strand