Very breif history

Question 1

Oswald Avery, Maclyn McCarty, and Colin Macleod

Answer 1

1944
demonstrated that DNA was the transforming principle of pneumococcus bacteria

Question 2

Erwin Chargaff

Answer 2

1949
In DNA found that amount of A=T and G=C

Question 3

Alfred Hershey and Martha Chase

Answer 3

1952 used randomly labeled viruses infected bacteria cells; observed that infected bacteria cells contained radioactivity originating from DNA of virus
Dna is hereditary material

Question 4

Rosalind Franklin

Answer 4

1953 Produced x ray diffraction pattern of DNA
Suggest double helix pattern

Question 5

James Watson and Francis Crick

Answer 5

1953 deduced the structure of DNA using information from the work of Chargaff, Franklin and Maurice Wilkins