
Crick and Watson's DNA Molecular Model
1953
1953
1969-1970
1998-2002
1969
1992-1994
1940
1988
1878-1879
1903
1934
1976-1979
1919
1920-1925
1870
1999
1994
2012
1862
1999-2003
1936
1880
1801-1830
1879
circa 1842
1905
Made late 1700s, modified 1800s
1988-2000
1951
1991-2000
1950
1948-1953
1947
circa 1972
2010
2002
2000-2002
2000-2002
1835