
Crick and Watson's DNA Molecular Model
1953
1953
1953
1956
1948-1953
1955
1940
1951
1839 (original); circa 1988 (replica)
1947
circa 1955
1950
1950
1948
1946
1955
1955
1951
1943
1948
circa 1955
circa 1942
1956
1952
1954
1952
1954
1952
1954
1956
1956
1952
1945
1951
1955
1947
1951
1945-1955
circa 1950
1955
1940
1953
1954
1949
1951
1953
1946
1942
1954
1944
1955