Pardo - History

History

The formation of the Brazilian people is marked by a mixture 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! The high ancestral variability observed in Whites and Blacks suggests that each Brazilian has a singular and quite individual proportion of European, African and Amerindian ancestry in his/her mosaic genomes" (geneticist Sérgio Pena). The colonization of Brazil was characterised by a small proportion of women among the settlers. As there was a male predominance in the European contingent present in Brazil, most sexual partners of those settlers were, initially, Amerindian or African women, and, later, mixed-race women. This sexual asymmetry is marked on the genetics of the Brazilian people, regardless of skin color: there is a predominance of European Y chromosomes, and of Amerindian and African MtDNA. Haplogroup frequencies do not determine phenotype nor admixture. They are very general genetic snapshots, primarily useful in examining past population group migratory patterns. Only autosomal DNA testing can reveal admixture structures, since it analyses millions of alleles from both maternal and paternal sides. Contrary to yDNA or mtDNA, which are focused on one single lineage (paternal or maternal) the autosomal DNA studies profile the whole ancestry of a given individual, being more accurate in describing the complex patterns of ancestry in a given place. In the Brazilian "white" and "pardos" the autosomal ancestry (the sum of the ancestors of a given individual) tends to be largely European, with often a non European mtDNA (which points to a non European ancestor somewhere down the maternal line), which is explained by the women marrying newly arrived colonists, during the formation of the Brazilian people.

In the 1st century of colonization, there was generalised interbreeding between Portuguese males and Amerindian females in Brazil. However, the Amerindian population was decimated by epidemics, wars and slavery. Since 1550, African slaves began to be brought to Brazil in large numbers. Miscegenation between Portuguese males and African females was common. European and Asiatic immigrants who came to Brazil in the 19th and 20th centuries (Portuguese, Italians, Spaniards, Germans, Arab, Japanese, etc.) also participated in the process. Among many of the immigrant groups in Brazil, there was a large predominance of men.

In all Brazilian regions European, African and Amerindian genetic markers are found in the local populations, even though the proportion of each varies from region to region and from individual to individual. However most regions showed basically the same structure, a greater European contribution to the population, followed by African and Native American contributions: “Some people had the vision Brazil was a heterogeneous mosaic Our study proves Brazil is a lot more integrated than some expected". Brazilian homogeneity is, therefore, greater within regions than between them:

Not all descendants of this mixture of peoples are included in the "parda" category. Since racial classifications in Brazil are based on phenotype, rather than ancestry, a large part of the self-reported White population has African and Amerindian ancestors, as well as a great part of the Black population has large European and Native American contributions. Besides skin color, there are social factors that influence the racial classifications in Brazil, such as social class, wealth, racial prejudice and stigma of being Black, Mulatto or Amerindian.