
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
1960
1950
1948
1946
1950-1960
1950-1959
1955
1957
1950-1959
1955
1951
1943
1950-1960
1948
1957
circa 1960
1946-1960
1948-1953
circa 1955
circa 1942
1958
1956
1960
1952
1959
1959
1954
1952
1960
1960
1957
1954
1952
1954
1957
1960
1959
1956
1957