
Crick and Watson's DNA Molecular Model
1953
1953
1953
1955
1963
1956
1948-1953
1839 (original); circa 1988 (replica)
1940
1951
1938
1947
1938
1948
1938
1935
1938
1961
1940
circa 1955
1950
1960
1960
1960
1955; 1830
1950
1955
1959
1954-1955
1936
1935
1945
1941-1963
1961-1962
1940-1945
1948
1946
1949
1950-1960
1950-1959
1940
1955
1957
1960
1950-1959
1950-1953
1962
1955
1951
1943
circa 1953