
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1969
1960
1920-1960
1918
1920-1950
1920-1925
1934
1919
1976-1979
1923
circa 1956-1959
1955
1948-1953
1920-1950
1920-1950
1963
1951
1949
1974
1965
1985
1915-1925
1975
1931
1917
1951
1942
1956
circa 1972
1960-1970
1964
1925-1958
1935-1965
1946
1959
1976-1982
1918-1920
1948-1953
1955
1915-1918
1979
1969
1930-1931
1957
1938-1940
1945
circa 1920