
Crick and Watson's DNA Molecular Model
1953
1953
1953
1956
1948-1953
1955
1839 (original); circa 1988 (replica)
1940
1951
1947
circa 1955
1950
1950
1948
1946
1950-1959
1955
1957
1950-1959
1955
1951
1943
1948
1957
circa 1955
circa 1942
1958
1956
1952
1959
1959
1954
1952
1957
1954
1952
1954
1957
1959
1956
1957
1959
1956
1959
1957
1952
1957
1945
1951
1955
1947