
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1948-1953
1950-1952
1952-3
1960
1951
1960
circa 1956
1830 (original); 1967 (model)
1955
1957
circa 1956-1959
1950-1960
1948-1950
1955
1954
1953
1956
1956
1959
1951-1953
1955
1950-1953
1953
1958
1960
1949
1950
1948
circa 1956
1951
1948-1953
1956
1955
circa 1955
1960
1950
1953
1960
1951
1955
circa 1950
1950
1951
1955
1950-1960
1959
1950