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