
Crick and Watson's DNA Molecular Model
1953
1953
1953
1963
1956
1955
1839 (original); circa 1988 (replica)
1951
circa 1955
1950
1955-1965
1960
1950
1965
1950-1960
1950-1959
1955
1957
1950-1959
1955
1951
1950-1960
1957
1962
circa 1960
1965
circa 1955
1962
1958
1956
1964
1960
1964
1952
1963
1962
1963
1959
1959
1954
1964
1952
1963
1961
1962
1960
1960
1964
1957
1962
1954