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