
Crick and Watson's DNA Molecular Model
1953
1953
1953
1955
1956
1948-1953
1839 (original); circa 1988 (replica)
1940
1951
1953-1958
1938
1947
1938
1948
1938
1938
1940
circa 1955
1940
1950
1960
1960
1960
1955; 1830
1950
1951
1939-1955
1955
1949
1954-1955
1940-1945
1950-1960
1959
1945
1948
1946
1950-1959
1955
1950-1959
1955
1943
1948
1957
circa 1960
1957
1960
1950
1956
1950-1960
1937
1960