
Crick and Watson's DNA Molecular Model
1953
1953
1949
1948-1953
1959
1935
1949
1945-1955
circa 1958-1963
1935
1963
1957
1950-1952
1955
1939-1955
1945
1960
1942
1951
1938
1940
1938
circa 1956-1959
1953
1945
1948
1946
1950-1959
1955
1950-1959
1955
1943
1948
1957
1962
circa 1960
2000-100 BCE
1945
1947
1940
1955
1955
1961
circa 1955
1942
1946
1941-1950
1938-1940
1962
1940
1936