
Crick and Watson's DNA Molecular Model
1953
1953
1953
1955
1956
1839 (original); circa 1988 (replica)
1951
circa 1955
1955; 1830
1955
1954-1955
1955
1957
1955
1951
circa 1953
1957
1938 and 1951
2000-100 BCE
1954
1951
1953
1954
1951
circa 1955
1957
1955
1956
1952
1955
1954
1952
1955
1957
1954
1952
1954
1957
1956
1957
1956
1957
1952
1954
1957
1951
1951
1956
1951-1953
1953
1956