Hypodescent

Vkothii said:
You introduced the "science" of ethnic markers in DNA testing. I want to know how reliable a marker or indicator it is. Does anyone know?

It "might" be useful, so as you say, something the police would consider doing to focus on an unknown identity?
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I gave one link previously that contains much of the information you seek. Exactly how reliable the ancestry results are depends on which markers are present in an individual. If an individual contains only markers that are unique to a certain region, it can be fairly certain that individual's linage can be traced back to that region although they may have been born in any country. Here is a link from the site I referenced earlier with an explaination as to how their system works, plus an ancestry profile of a person most likely to be from the Hutu tribe of Rwanda. Notice page 10 of the profile as to give an indication of the likelyhoods of the sampled person's ancestry.
http://www.dnatribes.com/sample-results/dnatribes-sample-hutu-rwanda.pdf
 
vk said:
You introduced the "science" of ethnic markers in DNA testing.
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They aren't usually ethnic markers, but geographical origin markers.

The probable ethnicity is inferred, and the probable "race" etc, by statistical likelihood given the geographical origin and present situation.

In the US, for example, most people with 40% Cameroonian origin and 60% Scottish origin will be of the "black race" and southeastern migrant inner city ethnicity.

That is because of hypodescent, in the US sociology of "race".

In Brazil, the racial and ethnic inferences would probably be different.
 
Appearances do not deceive.
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Unless you're Brazilian. If you're Brazilian you get fooled all the time - can't tell one race from another, properly.

Or if you were Egyptian, Turkish, Arabic, etc, back in the days of European slavery, when the revealed qualities of the "white" race were not apparent, and you found members of that race invariably lazier and stupider than average.

Or if you were European in the late 1400s, and found the Mongolian and Indian races indistinguishable.

But if you are US American born and raised, and possessed of the appropriate cultural conditioning, you are infallible in the matter of ascertaining the implications of even the most minor details of appearance.

edit in: http://www.ncbi.nlm.nih.gov/pubmed/9798791?dopt=Abstract
More than 1500 clients were initially recruited, with follow-up interviews completed with 849. By follow-up, 106 clients, 12.5% of the follow-up sample, had changed their racial self-identification: 5.7% from Black to White, 30.2% from Black to Brown, 20.8% from White to Brown, 3.8% from White to Black, 23.6% from Brown to Black, and 15.1% from Brown to White. The study of race and race relations in Brazil is a complex undertaking which requires the thorough examination of Brazilian culture and history. Theories of race in Brazil and the self-identification of race in the Brazil cooperative agreement are discussed. Race is of little use in Brazil as a construct for analysis.
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http://www.jstor.org/pss/2580461
That Brazilians hold a different conception of race from Americans has become quite clear to analysts both in Brazil and in the US. - -
- - - -
Harris observed that Brazilians seem to define almost any combination of facial features by the term moreno/a "with a high but unpatterned frequency"
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http://www.allacademic.com/meta/p_mla_apa_research_citation/1/7/6/4/5/p176458_index.html
This paper shows that a large percentage of the most educated and highest paid Afro-Brazilians identify as black although the prevailing idea is that blacks (pretos) are paid lower than browns (pardos). The Brazilian census does not allow Afro-Brazilians to choose the negro category which is a more politically charged racial identification. For this reason it is difficult to distinguish between those who claim a negro identity and a preto identity. My survey results support my claim that Afro-Brazilians who choose a black identity do so because they can afford to.
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And of course the odd possibility that the white "race" seems to have been invented, sometime in the early 1700s in the British Empire (especially in North America), and that originally the Irish (for example) did not belong to it, while the advanced Mediterranean ancients did regardless of physical appearances. http://books.google.ca/books?id=G4e...nt&ct=result&cd=3&cad=bottom-3results#PPP1,M1

They had been English far longer than they had been "white"
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Orleander said:
so neither of these men look black?? They are white?

39_barack-obama.jpg
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If I had never heard of Barack Obama, and only had this picture to go on, my guess would be he is an Egyptian or Lybian Arab.
 
I agree. He doesn't have the typical black look at all, and since he is fully half white, what is this talk about him being black??
 
I had a mate in the 70s who is totally Caucasian, but with an olive complexion which made him look somewhat Middle-Eastern. Actually this guy was a dead-ringer for JC (but didn't have a beard, just a big 'tash, long hair. He would've been a shoo-in for the lead in that play).

Both his younger brothers were lily-white, typical pasty-skinned Euro types - the big bro looked Euro except for the colour of his skin.
 
Kadark said:
The guy in your added picture doesn't look Black. He just looks like a very dirty Indian in desperate need of a shower. I'm thinking you could take his skin tone down about three shades with a good scrubbin'.

Oh, and if you think Obama looks "mostly Caucasion", then you're colorblind. Or you're just plain stupid.

:shrug:
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Wow. Then do white people look like they fell in bleach? But let's leave aside what you probably think wasn't racist.

Racial charactoristics do not just come down to which crayon looks most like your skin. Shapes and sizes of features, for example, have a strong effect on one's racial looks.
 
syg said:
I agree. He doesn't have the typical black look at all, and since he is fully half white, what is this talk about him being black??
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That's hypodescent. We're back to the OP.
 
Good. Hey guys go to Wikipedia, type in mulatto and see who the first person is as an example!
 
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