
Crick and Watson's DNA Molecular Model
1953
1953
1953
1956
1948-1953
1955
1934
1839 (original); circa 1988 (replica)
1940
1951
1947
1935
circa 1955
1950
1950
1935
1948
1946
1955
1955
1951
1943
1948
1931
1930
circa 1930
circa 1955
circa 1942
1956
1925
1928
1952
1954
1952
1954
1952
1954
1956
1956
1952
1945
1951
1955
1927
1947
circa 1930
1951
1945-1955
circa 1950
1955
1935