
Crick and Watson's DNA Molecular Model
1953
1953
1953
1955
1957
1960
circa 1956-1959
1955
1955
1960
1830 (original); 1967 (model)
1960
1961
circa 1955
1958
1956
1955
1955
2000-100 BCE
1961
1956
1955
1959
circa 1953
1957
1953-1958
1957
circa 1960
1960
1960
1960
1960
1955; 1830
1957
1960
1955
1959
1959
1954
1961
1960
1955
1960
1957
1954
1954
1957
1961
1960
1961
1959