
Crick and Watson's DNA Molecular Model
1953
1953
1953
1951
1955
1950-1952
1955
1960
1951-1953
circa 1956
circa 1956-1959
1960
1950
1953
1956
1953
1959
1839 (original); circa 1988 (replica)
1960
1950-1959
1955
1950-1959
1955
1957
circa 1960
1957
1953-1958
circa 1955
1950
1960
1960
1960
1950
1955; 1830
1950
1951
1955
1954-1955
1950-1960
1959
1960
1956
1950-1960
1960
1954
1958
1951
1954
circa 1953
1951
circa 1955