
Crick and Watson's DNA Molecular Model
1953
1953
1953
1955
1957
circa 1956-1959
1955
1955
circa 1955
1958
1956
1955
1955
2000-100 BCE
1956
1955
1959
circa 1953
1957
1953-1958
1957
1955; 1830
1957
1952
1955
1959
1959
1954
1952
1955
1957
1954
1952
1954
1957
1959
1956
1957
1959
1956
1959
1957
1952
1954
1957
May 1953
1957
1955
1957
1953
1956