
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1969
1949
1976
1955
1960
1951
1960
1953
1948-1953
1955
1957
circa 1956
circa 1956-1959
1975
1964
1963
1973
1969
1960
1960
1951-1953
1953
1959
circa 1956
1960
1978
1968
1961
1978
1974
1974
1948-1953
1948-1950
1962
1954-1968
1952-3
1960
1970-1971
1971
1968
1948
1946
1950-1959
1955
1950-1959
1955
circa 1960-1970