
Crick and Watson's DNA Molecular Model
1953
1953
1953
1948-1953
1940
1955
1957
circa 1956-1959
1945-1955
1947-1958
1955
1955
1945
1949
1945-1948
1949
1951
1950
1830 (original); 1967 (model)
1948-1953
1950
1947
circa 1955
circa 1942
1958
1956
1945
1955
1947
1955
1940
2000-100 BCE
1945-1955
1956
1940
1955
1950-1953
1948
1946
1945
1945
1940
1959
1943
circa 1953
1957
1953-1958
1951
1950-1952
1950-1959
1957