
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1951
1953
1942
1948-1953
1943
1951-1953
1953
1945
1940
1940
1940
1948-1953
1948-1950
1952-3
1948
1946
1943
1948
1940-1950
circa 1942
1952
1954
1952
1954
1952
1954
1952
2000-100 BCE
1945
1941-1950
1951
1940-1945
1947
1950
1950
1947
1951
1953
circa 1950
1940
1946-1948
1944-1945
1946
1951-1953
1942
1940-1949
circa 1950