
Crick and Watson's DNA Molecular Model
1953
1953
1953
1948-1953
1951
1839 (original); circa 1988 (replica)
1947
1950
1950
1948
1946
1951
1948
1952
1954
1952
1954
1952
1954
1952
1945
1951
1947
1951
circa 1950
1953
1954
1949
1951
1953
1946
1954
1944
1954
1951
1951
1950-1951
1946
1950
1948
1946
1950
1945
circa 1953
1955; 1830
1951-1953
1946-1948
1953
1946
1951-1953
1949