
Crick and Watson's DNA Molecular Model
1953
1953
1953
1950-1952
1950
1953
1950
1951
1954
1951
1953
1954
circa 1953
1950-1953
1950-1953
1951
1955; 1830
circa 1950
1950
1951
1952
1954
1952
1954
1952
1954
1952
1954
1951
1951
1951-1953
1953
1951-1953
1950
2000-100 BCE
1950-1951
1953
1951
1938 and 1951
May 1953
circa 1950
circa 1953
1903 (original); 1982 (model)
1951
1954
1954
1951
1951
circa 1953
1990-96
1830 (original); 1967 (model)