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