
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1969-1970
1969
1949
1935
1976-1979
1976
1955
1960
1935-1965
1951
1960
1920-1950
1930-1960
1984-1986
1934
1920-1925
1953
1942
1948-1953
1955
1920-1960
1957
circa 1956
1935-1945
1937
1945-1955
1925-1935
1943
circa 1956-1959
circa 1980
1934-1935
1975
1920-1925
1964
1985
1985
1970-1979
1976-1982
1935
1963
1935
1973
1979
1940
1969
1920-1940
1960