
Crick and Watson's DNA Molecular Model
1953
1953
1953
1934
1935
1942
1948-1953
1955
1955
1940
1951
1946-1950
1949
1945-1955
circa 1956-1959
1935
1935
1934-1935
1950-1952
1958
1946
1951-1953
1959
1945
1938
1948-1950
1943
1839 (original); circa 1988 (replica)
1936
1949
1935
1948-1953
1933-1959
circa 1925
1945
1926
1948
1946
1950-1959
1955
1950-1959
1955
1943
1948
1957
1927
1957
1940
1927
1938
1947