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Thread: DNA analysis of Brazilian whites

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    Post DNA analysis of Brazilian whites

    We examined DNA polymorphisms in the nonrecombining portion of the Y-chromosome to investigate the contribution of distinct patrilineages to the present-day white Brazilian population. Twelve unique-event polymorphisms were typed in 200 unrelated males from four geographical regions of Brazil and in 93 Portuguese males. In our Brazilian sample, the vast majority of Y-chromosomes proved to be of European origin. Indeed, there were no significant differences when the haplogroup frequencies in Brazil and Portugal were compared by means of an exact test of population differentiation. Y-chromosome typing was quite sensitive in the detection of regional immigration events. Distinct footprints of Italian immigration to southern Brazil, migration of Moroccan Jews to the Amazon region, and possible relics of the 17th-century Dutch invasion of northeast Brazil could be seen in the data. In sharp contrast with our mtDNA data in white Brazilians, which showed that 60% of the matrilineages were Amerindian or African, only 2.5% of the Y-chromosome lineages were from sub-Saharan Africa, and none were Amerindian. Together, these results configure a picture of strong directional mating between European males and Amerindian and African females, which agrees with the known history of the peopling of Brazil since 1500.

    http://www.journals.uchicago.edu/AJH...80/002280.html

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    Senior Member Necronomicom's Avatar
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    Not a surprise, many more European males came here then females, therefore resulting in racemixing with indian women.

    i only have one great grandparent who cannot be tracked all the way back to Europe, my Grandma says he is a Brazilian of over 400 years of generations, my Grandma also claim that the first woman in his Brazilian family line was a Armerindian who mixed with a European.

    It could be true but it doesn't bother me, if its true all the armerindian traits were already erased from my family line.

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    How do you explain the assimilation of black females and black males?

    It's a little easier to dismiss a little Mongoloid ancestry, but Negroid is a whole different matter. What a blow to the ego.

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    Senior Member Necronomicom's Avatar
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    DNA was obtained from 200 unrelated Brazilian males self-defined as "whites," randomly drawn from paternity casework. This is essentially a subsample of the 247 Brazilians described elsewhere (Alves-Silva et al. 2000). The samples were from the following Brazilian regions: 49 from the north (states of Amazonas, Acre, Rondônia, and Pará), 49 from the northeast (state of Pernambuco), 50 from the southeast (state of Minas Gerais), and 52 from the south (states of Rio Grande do Sul, Santa Catarina, and Paraná)
    keep in mind that most people who self-define themselves as white in the North and Northeast Brazil are not white by European standards.

    Race mixing with black slaves was common however part-blacks were still considered slaves and therefore not accepted in the white families, blacks and mulatos only began to be accepted by the white families in the 20 century, but still here its very rare to see a pure black with a pure white person, but its common to see a pure white with a part-black person, many times that happens because the part-black person is accepted as white in our society.

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    Senior Member Jethro Tull's Avatar
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    Não sabia que tinha outro brasileiro aqui!
    e de sampa também. ehehehe

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    Member galvez's Avatar
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    Quote Originally Posted by Nordhammer
    It's a little easier to dismiss a little Mongoloid ancestry, but Negroid is a whole different matter. What a blow to the ego.
    I don't think anyone -- including Necronomicom -- in this forum claimed most or even a majority of Brazilians are White.

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