
Crick and Watson's DNA Molecular Model
1953
1953
1953
1951
1955
1950-1952
1960
1951-1953
1955
circa 1956-1959
circa 1956
1960
1949
1950
1953
1956
1953
1959
1949
1961
1839 (original); circa 1988 (replica)
1960
1950-1959
1955
1950-1959
1955
1957
circa 1960
1957
1961
circa 1955
1950
1960
1950
1951
1955
1950-1960
circa 1955
1950-1960
1950-1960
1958
1956
1960
1952
1959
1959
1954
1952
1961
1960
1960