
Crick and Watson's DNA Molecular Model
1953
1953
1953
1951
1950-1952
1951-1953
1950
1953
1953
1839 (original); circa 1988 (replica)
1950
1950
1951
1952
1954
1952
1954
1952
1954
1952
1951
1951
1953
circa 1950
1950
1954
1951
1954
circa 1953
1954
1951
1951
1951-1953
1950-1951
1950-1953
1955; 1830
1951
1950-1953
1938 and 1951
May 1953
2000-100 BCE
1953
circa 1950
circa 1953
1954
1951
1951
1990-96
circa 1950
circa 1950
1950