
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1949
1935
1955
1960
1935-1965
1951
1960
1920-1950
1930-1960
1934
1920-1925
1953
1942
1948-1953
1955
1920-1960
1957
circa 1956
1935-1945
1937
1945-1955
1925-1935
1943
circa 1956-1959
1934-1935
1920-1925
1964
1935
1963
1935
1940
1920-1940
1960
1960
1951-1953
1953
1959
1945
1920-1950
1920-1958
1921-1930
circa 1956
1937-1960
1960
1940
1936
1940