
Crick and Watson's DNA Molecular Model
1953
1953
1953
1934
1935
1942
1955
1960
1948-1953
1955
1946-1950
1940
1951
1949
1945-1955
circa 1956-1959
1935
1935
1934-1935
1945
1967
1950-1952
1958
1946
circa 1964
1951-1953
1959
1938
1937-1960
1966
1948-1950
1930-1960
1935
1943
1930-1960
1839 (original); circa 1988 (replica)
1936
1949
1961
1960
1948-1953
1933-1959
1954-1968
circa 1925
1945
1968
1926
1948
1946
1950-1959
1955