
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1949
1935
1955
1918
1951
1920-1950
1907
1934
1920-1925
1953
1942
1948-1953
1955
1918-1920
1919
1957
1909-1910
circa 1956
1935-1945
1937
1945-1955
1925-1935
1915-1925
1943
1934-1935
1920-1925
1935
1915-1918
circa 1910
1935
1940
1920-1940
1917
1951-1953
1953
1945
1920-1950
1921-1930
circa 1956
1910-1926
1940
1936
1940
1913
1934
1926-1932
1935