Nobel Laureate Sir John Sulston has called on the British government to pass laws to prevent discrimination against people on the basis of their genetic make-up. "The main worry with genetic tests is abuse of the information," Sulston said.

Research on human genetics has led some to worry that insurance companies and employers might use genetic tests to screen people who may be genetically predisposed to particular types of disease.

"What we have to establish, right across the board, is the right for people to be treated equally, regardless of their genetic make-up," Sulston said. He, fellow Briton Sydney Brenner and the U.S.' Robert Horwitz shared the 2002 medicine Nobel