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