
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1955
1960
1951
1960
1953
1948-1953
1955
1957
circa 1956
1945-1955
circa 1956-1959
1964
1963
1960
1960
1951-1953
1953
1959
1945
circa 1956
1960
1961
1948-1953
1948-1950
1962
1952-3
1960
1948
1946
1950-1959
1955
1950-1959
1955
1948
1957
1962
circa 1960
1957
1950-1960
1963
circa 1955
1957
1950-1960
1950-1960
1962
1958
1956