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Solution


Q.

Select the correct match.                                     [2018]
1 Alec Jeffreys - Streptococcus pneumoniae  
2 Alfred Hershey and Martha Chase - TMV  
3 Matthew Meselson and F. Stahl - Pisum sativum  
4 Francois Jacob and Jacques Monod - Lac operon  

Ans.

(4)

Alec Jeffreys (1984) invented the DNA fingerprinting technique. Alfred Hershey and Martha Chase proved that DNA is genetic material using T2 bacteriophages in an experiment. Matthew Meselson and F. Stahl proved semiconservative mode of replication in bacterium E. coli.