
Crick and Watson's DNA Molecular Model
1953
1953
1953
1963
1960
(1962); 1982
1959
1830 (original); 1967 (model)
circa 1956-1959
1968
1955
1955
1957
1962
circa 1960
1957
1961
circa 1955
1955-1965
1960
1965
1957
1957
1955
1957
1957
1954
1958
1964
1953
1964
1956
circa 1953
1955-1965
circa 1964
1955
1956
1959
1959
1961
1962-1967
1963
1953
1955-1964
1955-1960
1956
1967
May 1953
1953-1960
1968
1963