question_answer

The common method of DNA replication is :

A)  disruptive                          

B)  semiconservative

C)   conservative                   

D)  random

Correct Answer: B

Solution :

 The common method of DNA replication (synthesis of new DNA molecule) is semiconservative i.e., in each replication one half is formed new and other is old. Semiconservative mode of DNA replication was proved by Meselson and Stahl by using N-15. In conservative, a new structure is formed over the template of old structure and in disruptive-old structure undergoes fragmentation.