
Crick and Watson's DNA Molecular Model
1953
1953
1953
1955
1951
1951
1956
1955
1839 (original); circa 1988 (replica)
1830 (original); 1967 (model)
1903 (original); 1982 (model)
1990-96
circa 1956
circa 1955
1955; 1830
1955
1956
1954
1953
1954
1951
circa 1955
1955
1956
1952
1955
1954
1952
1955
1954
1952
1954
1956
1956
1952
1954
1951
1951
1956
1951-1953
1938 and 1951
1953
1956
May 1953
1951-1953
2000-100 BCE
1953
1951
1955
1955
1951