According to Mathieson 2015 , they had around a 30 % incidence of blue eyes ( versus around 25 % for the Steppe populations ) and carried the same mutations for light skin that the Steppe people did .
according to mathieson 2015 they had around a 30 incidence of blue eyes versus around 25 for the steppe populations and carried the same mutations for light skin that the steppe people did