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