
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1948-1953
1950-1952
1952-3
1830 (original); 1967 (model)
1951
1946-1950
1948-1950
1953
1954
1953
1946
1950-1953
1951-1953
1947
1946; 1946
1948
1947
1949
1950
1951
1948-1953
1947
1947
1948
1946
1950
1953
1951
1955; 1830
circa 1950
1950
1948
1951
1949
1946-1950
1950
circa 1950
1948
1950-1951
1948
1946
1948
1950
1949
1951
1946
1954