DNA Studies Challenge the Meaning of Race

According to geneticists and anthropologists, genetic diversity appears to fall along a continuum, with no clear breaks delineating different groups. But, ironically, researchers studying genetic diversity are being stymied by the intense sensitivity surrounding the topic. A major international project to survey genetic diversity around the globe has been opposed by activists, and a planned database of genetic polymorphisms is being constructed so as to prevent comparisons between population groups, making it useless for exploring the gene frequency variations that do exist, according to researchers.