
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1997
1969
1999
1988
1976-1979
1976
1955
1960
1999
1960
1984-1986
1957
1953
1955
1990-1997
1999
circa 1956
1995
1992-1994
circa 1956-1959
circa 1980
1975
1964
1985
1985
1970-1979
1976-1982
1999
1963
1999
1979
1980-1990
1953
1959
1973
1981-1990
1969
1960
1999
1960
circa 1956
1999
1960
1978
1998
1970-1981
1968