
Crick and Watson's DNA Molecular Model
1953
1953
1953
1948-1953
1945
1950-1952
1946-1950
1949
1949
1948-1950
1948-1953
1945
1948
1946
1943
1948
1947
1950
1953
1950
1951
1949
1951
1953
circa 1953
1944
1950-1953
1950-1953
1951
1955; 1830
circa 1950
1950
1951
1952
1952
1952
1952
1951
1951
1950
2000-100 BCE
1950-1951
1953
1945
1946
1948
1949
1946
1943
1947
1946