
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1960
1955
1951
1960
1957
1953
1948-1953
1955
1942
circa 1956
1943
1945-1955
circa 1956-1959
1964
1951-1953
1953
1959
1960
1960
1963
1945
1961
circa 1956
1960
1948-1953
1948-1950
1962
1952-3
1960
1955-1965
1963
1965
circa 1955
1950-1960
1950-1960
circa 1942
1962
1958
1956
1960
1964
1952
1963
1962
1963
1959
1959