
Crick and Watson's DNA Molecular Model
1953
1953
1948-1953
1949
1935
1934
1955
1945
1945-1955
1942
1952-3
1951
1953
1955
1953
1949
1830 (original); 1967 (model)
1948-1950
1935
1948-1953
1940
1950-1952
1935
1955
1936
1956
1946
1930-1940
1934
1935-1945
1946-1950
1940-1945
1955
1939-1955
1951-1953
1930-1935
1937
1948
1954
1936
1839 (original); circa 1988 (replica)
1937
1955
circa 1939
1940
1955
1956
1951
1935-1950
circa 1956
1953