Question

Match the columns I and II, and choose the correct combination from the options given.

	Column I		Column II
A	F. Griffith	i	E. coli
B	Hershey and Chase	ii	Bacteriophage
C	Meselson and Stahl	iii	Faba beans
D	Taylor et al	iv	Pneumococcus

• A. $A-iv,B-i,C-ii,D-iii$
• B. $A-iv,B-ii,C-i,D-iii$
• C. $A-ii,B-i,C-iii,D-iv$
• D. $A-iv,B-iii,C-ii,D-i$

Answer 1

The correct option is B $A-iv,B-ii,C-i,D-iii$

In $1928$, Frederick Griffith, in a series of experiments with Streptococcus pneumoniae (bacterium responsible for pneumonia), witnessed a miraculous transformation in the bacteria.

The unequivocal proof that $DNA$ is the genetic material came from the experiments of Alfred Hershey and Martha Chase $\left(1952\right)$. They worked with viruses that infect bacteria called bacteriophages.

Matthew Meselson and Franklin Stahl performed the experiment in $1958$.They grew E. coli in a medium containing heavy isotope of nitrogen as the only nitrogen source for many generations.

Taylor et al work on faba beans.