
Crick and Watson's DNA Molecular Model
1953
1953
circa 1925
1920-1950
1905
1948-1953
circa 1956-1959
1918-1920
1903
1918
1920-1960
1949
1960
1919
1935
1920-1950
1934
1903
1920-1925
1955
1920-1950
1945
1945-1955
1920-1950
1942
1923
1957
1915-1918
1905
1959
1950-1960
1952-3
1951
1953
1955
1917
1953
1949
1914-1918
1920-1950
1830 (original); 1967 (model)
1948-1950
1935
1948-1953
circa 1910
1940
1933-1959
1950-1952
1937-1960
1935
1907