Question

Choose the correct answer from the alternatives given :
Match column I with column II and select the correct option from the given codes.

	Column A		Column B
A.	F. Meischer	(i)	DNA double helix
B.	Griffith	(ii)	Nuclein
C.	Hershey and Chase	(iii)	S. pneumonia
D.	Watson and Crick	(iv)	Bacteriophages
E.	Wilkins and Franklin	(v)	X-ray diffraction studies

• A. A-(ii), B-(iii), C-(iv), D-(i), E-(v)
• B. A-(v), B-(iv), C-(iii), D-(i), E-(ii)
• C. A-(i), B-(iii), C-(iv), D-(ii), E-(v)
• D. A-(i), B-(iv), C-(iii), D-(v), E-(v)

Answer 1

The correct option is A A-(ii), B-(iii), C-(iv), D-(i), E-(v)

Feischer first discovered DNA and isolated it from an intact cell and called it 'nuclein'. In 1869, Friedrich Miescher isolated "nuclein," DNA with associated proteins, from cell nuclei. He was the first to identify DNA as a distinct molecule. Griffith performed the experiment onS.pneumoniacalled the transforming principle to find out the genetic material. Hershey and Chase worked on bacteriophages by radio-labeling them and allowing them to infect bacteria to find out whether protein or DNA are the hereditary unit. Watson and Crick proposed the DNA double helix model in the 1950's based on the X-ray diffraction studies of Wilkins and Franklin.

So, the correct option is 'A-(ii), B-(iii), C-(iv), D-(i), E-(v)'.