
Crick and Watson's DNA Molecular Model
1953
1953
1953
1951
1948-1953
1955
1950-1952
1955
1942
1951-1953
circa 1956
1949
1945-1955
1948-1950
1950
1953
1956
1953
1945
1946
1839 (original); circa 1988 (replica)
1948
1946-1950
1940
1949
1940-1945
1943
1948-1953
1940-1950
1945
1948
1946
1955
1955
1943
1948
1957
1957
1947
1948
1940
circa 1955
1940
1950
1950
1955; 1830
1950
1951
1955
1949
1954-1955