The formation of the Brazilian people is characterized by the mixing of whites, blacks and Indians. According to geneticist Sérgio Pena ""with the exception of immigrants of first or second generation, there is no Brazilian who does not carry a bit of African and Amerindian genetic"". "The correlation between color and genomic ancestry is imperfect: at the individual level one cannot safely predict the skin color of a person from his/her level of European, African and Amerindian ancestry nor the opposite. Regardless of their skin color, the overwhelming majority of Brazilians have a high degree of European ancestry. Also, regardless of their skin color, the overwhelming majority of Brazilians have a significant degree of African ancestry. Finally, most Brazilians have a significant and very uniform degree of Amerindian ancestry.