A) Griffith
B) Linus Pauling
C) Meselson and Stahl
D) Watson
Correct Answer: A
Solution :
F. Griffith (1928) by transformation experiment conducted on mice and Pneumococcus pneumoniae, proved that DNA is the genetic material. Meselson and Stahl performed a density gradient experiment (using heavy isotope of nitrogen) in bacteria to confirm the Watson and Cricks semi-conservative theory of DNA replication. Watson and Crick also proposed double helical model of DNA.
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