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Milestones in DNA history


Given the DESCRIPTION, identify the ANSWER

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1.

The scientist who reported that DNA composition is species specific was :

  Herbert Boyer

  Sidney Brenner

  Hamilton Smith

  Erwin Chargaff

  Half-n-half Clue
 

2.

The scientist(s) who developed a technique to sequence DNA and later won a Nobel prize for their achievement in 1980 is(are) :

  Harold Varmus and Rodney Porter

  Arnold Levine and Gerald Edelman

  Walter Gilbert and Frederick Sanger

  Clara Bloomfield

  Half-n-half Clue
 

3.

The scientist who identified the transforming agent in Griffith's famous experiment (1928) as DNA was :

  Erwin Chargaff

  Friedrich Miescher

  Oswald Avery

  Peter Mitchell

  Half-n-half Clue
 

4.

Robert Holley, Har Gobind Khorana, and Marshall Nirenberg shared the Nobel prize for medicine in 1968 for their contribution to DNA reasearch, which was :

  the elucidation of protein synthesis.

  the discovery of the lac(tose) operon.

  the discovery of the presence of DNA which could not be expressed.

  the discovery of the structure of DNA.

  Half-n-half Clue
 

5.

The first organism ever to be cloned from adult cells was :

  Dolly, the sheep

  A cow

  Tadpoles

  Northern Leopard frogs

  Half-n-half Clue
 

6.

Proof of the model of DNA replication suggested by Watson and Crick came from the experiments of :

  George Beadle and Edward Tatum

  Sidney Brenner and Francis Crick

  Stanley Cohen and Herbert Boyer

  M. S. Meselson and F. W. Stahl

  Half-n-half Clue
 

7.

The scientist who created the first recombinant DNA molecules :

  Ian Wilmut

  Paul Berg

  Howard Temin

  James Shapiero

  Half-n-half Clue
 


 
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