
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1969
1935
1988
1949
1976-1979
1976
1935-1965
1960
1955
1951
1960
1984-1986
1930-1960
1957
1953
1948-1953
1955
1942
1934
circa 1956
1937
1943
1945-1955
1925-1935
1935-1945
circa 1956-1959
circa 1980
1934-1935
1975
1964
1985
1985
1976-1982
1979
1951-1953
1953
1959
1973
1921-1930
1940
1960
1970-1979
1935
1935
1969
1960
1963