
Crick and Watson's DNA Molecular Model
1953
1953
1953
1955
1955
circa 1956-1959
1958
1959
1839 (original); circa 1988 (replica)
1955
1955
1957
1957
1955
circa 1955
1957
1957
1953
1957
1957
1955
1955
1954-1955
1959
1957
1955
1958
May 1953
1955
1954
1953
1956
1955
1954
1957
circa 1953
circa 1955
1958
1956
1952
1955
1959
1959
1954
1952
1955
1957
1954
1952
1954
1957