Question

Select the correct match : (1) Alec Jeffreys – Streptococcus pneumoniae (2) Alfred Hershey and – TMV Martha Chase

Answer 1

All are incorrect.

Alfred Jeffery -dna fingerprinting.

Hershey and chase proved ,dna is the genetic material which inherited from generation to generation.

Answer 2

Question:-

Select the correct match

(1) Matthew Meselson - Pisum sativum

and F. Stahl

(2) Alfred Hershey and - TMV

Martha Chase

(3) Alec Jeffreys - Streptococcus

pneumoniae

(4) Francois Jacob and - Lac operon

Jacques Monod

Answer (4)

Solution:-

Francois Jacob and Jacque Monod proposed model of gene regulation known as operon model/lac operon.

– Alec Jeffreys – DNA fingerprinting technique.

– Matthew Meselson and F. Stahl – Semiconservative DNA replication in E. coli.

– Alfred Hershey and Martha Chase – Proved DNA as genetic material not protein