Full coverage

Low graphics|Accessibility help
BBC News
watch One-Minute World News
News Front Page
Africa
Americas
Asia-Pacific
Europe
Middle East
South Asia
UK
Business
Health
Science & Environment
Technology
Entertainment
Also in the news
-----------------
Video and Audio
-----------------
Programmes
Have Your Say
In Pictures
Country Profiles
Special Reports
RELATED BBC SITES

Click the links below to find out the major developments in DNA
1859 1869 1903 1928 1944 1950 1952
1865 1879 1911 1929 1948 1951 1953
Walter Sutton, a Dutch botanist, shows that chromosomes are paired and that they carry hereditary information. He links Mendel's theory to identifiable physical structures in the cell.

PRODUCTS AND SERVICES

Americas Africa Europe Middle East South Asia Asia Pacific