
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1951
1953
1948-1953
1951-1953
1953
1945
1948-1953
1948-1950
1952-3
1948
1946
1948
1952
1954
1952
1954
1952
1954
1952
2000-100 BCE
1945
1951
1947
1950
1950
1947
1951
1953
circa 1950
1945
1948
1950
1955; 1830
1949
1950
1954
1949
1951
1946
1954
circa 1953
1951
1950-1953
1950-1953
1950-1952
1954
1951