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