
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1935
1955
1960
1951
1960
1934
1953
1942
1948-1953
1955
1957
circa 1956
1935-1945
1937
1945-1955
1943
circa 1956-1959
1934-1935
1935
1935
1940
1960
1960
1951-1953
1953
1959
1945
circa 1956
1937-1960
1960
1940
1936
1940
1934
1935
1948-1953
1948-1950
1952-3
1960
1948
1946
1950-1959
1955
1950-1959
1955
1943
1948