
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1955
1951
1953
1942
1948-1953
1955
circa 1956
1937
1945-1955
1943
1940
1951-1953
1953
1945
circa 1956
1940
1936
1940
1948-1953
1948-1950
1952-3
1948
1946
1955
1955
1943
1948
1940-1950
circa 1955
circa 1942
1956
1952
1954
1952
1954
1952
1954
1956
1956
1952
2000-100 BCE
1938-1940
1945
1941-1950
1945-1955
1939-1945
1951