
Crick and Watson's DNA Molecular Model
1953
1953
1953
1948-1953
1940
1935-1965
1934
1955
1957
1960
1936
circa 1956-1959
1945-1955
1935
1964
1947-1958
1955
1955
1936
1945
1949
1945-1948
1960
1967
1949
1951
1950
1948-1953
1963
1950
1960
1947
1935
1961
circa 1955
1950-1960
1950-1960
circa 1942
1958
1962
1956
1945
1950-1960
1950-1960
1950-1960
1931
1955
1947
1955
1935
1940