How "DNA" testing works

The tools for solving rapes and murders have improved rapidly. Five years ago DNA tests couldn't link suspects to hair or semen found on a victim. Today a crime lab can identify unique DNA patterns in a tiny sample of just 100 to 200 cells.

13.11.2002 | Английский язык | Иностранные языки и языкознание | Язык: английский | Просмотры: 97