
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1969
1949
1976-1979
1976
1955
1960
1951
1960
1957
1953
1942
1948-1953
1955
circa 1956
1937
1943
1945-1955
circa 1956-1959
circa 1980
1975
1964
1985
1985
1970-1979
1976-1982
1963
1979
1951-1953
1953
1959
1973
1945
1940
1969
1960
1960
circa 1956
1937-1960
1960
1978
1940
1970-1981
1968
1936
1940
1961
1978