
Crick and Watson's DNA Molecular Model
1953
1953
1953
1951
1948-1953
1955
1950-1952
1955
1951-1953
circa 1956
1949
1948-1950
1950
1956
1953
1946
1953
1948
1949
1946-1950
1839 (original); circa 1988 (replica)
1948-1953
1948
1946
1955
1955
1948
circa 1955
1950
1950
1951
1955
circa 1955
1956
1952
1954
1952
1954
1952
1954
1956
1956
1952
1951
1955
1947
1951
1953
circa 1950
1947
1950