
Crick and Watson's DNA Molecular Model
1953
1953
1953
1948-1953
1955
1957
1955
1955
1949
1955
1951-1953
1830 (original); 1967 (model)
1951
1949
1949
1951
1950
1948-1953
1950
1952-3
1948-1950
circa 1955
1956
1955
1955
2000-100 BCE
1951
circa 1950
1953
circa 1955
1950
1950
1952
1954
1952
1957
1954
1952
1954
1957
1956
1957
1956
1957
1952
1957
1956
1955
1950-1953
1948
1957