
Crick and Watson's DNA Molecular Model
1953
1953
1953
1963
1956
1934
1948-1953
1935-1965
1955
1839 (original); circa 1988 (replica)
1940
1951
1947
1935
1961
circa 1955
1950
1955-1965
1960
1950
1965
1968
1935
1948
1946
1950-1960
1950-1959
1955
1957
1950-1959
1955
1951
1943
1950-1960
1948
1957
1962
circa 1960
1935
1930-1940
1946-1960
1948-1953
1931
1965
1930
circa 1930
circa 1955
circa 1942
1962
1958
1956