Narrator: This is Science Today. In terms of genetics, modern Europeans fall into two groups: a Northern one and a Southern, or Mediterranean, group. Those were the findings of a study led by Dr. Michael Seldin, who chairs the Rowe Program in Genetics at the University of California, Davis Health System.
Seldin: These findings might have important implications in terms of looking at these individuals differently and furthermore, being able to really ascertain where people come from even when we have either inaccurate or the lack of information about a country of origin.
Narrator: Similar studies are being conducted in admixed populations, such as African-American and Mexican-American.
Seldin: We got our first hint that there was this substantial difference in European population substructure in some of our studies looking at admixed populations where it looked like in Mexican-Americans, in Mexican subjects and Puerto Ricans, that the European component actually had two parts to it.
Narrator: For Science Today, I'm Larissa Branin.