NEW 2019 LATIN AMERICAN GENETIC STUDY INCLUDING SEVERAL COUNTRIES

[BirdMan]

can you access the study barplot in better quality?

https://ascpt.onlinelibrary.wiley.co....1002/cpt.1598

I will try once my new computer arrives! I lost my old one.

[Argentano]

I will try once my new computer arrives! I lost my old one.

thanks. this barplots give a very good idea but it would be cool to see more detailled ones.

The ecuadorian and mexico DF samples look identical right?

also surprised chiapas admixed group is almost fully native american.

[Leon77]

i tihnk the SSA in ecuador is more related to almost pure black ecuatorians than the coutnry being really tri racial. Similar to peru in that regard just with more blacks.

Well, I don't know Ecuador that well (I have only been to Guayaquil and Salinas) but the SSA blood is very obvious in the area that I visited. Definitely MUCH more African than Lima or Mexico City. I do think the Ecuadorian sierra (Quito) is significantly less African than the coast.

Random teenagers from Guayaquil:

[Argentano]

Well, I don't know Ecuador that well (I have only been to Guayaquil and Salinas) but the SSA blood is very obvious in the area that I visited. Definitely MUCH more African than Lima or Mexico City. I do think the Ecuadorian sierra (Quito) is significantly less African than the coast.

Random teenagers from Guayaquil:

i am not an expert when it comes to ecuador but i have the impression they are similar to colombia, some areas mestizo, some areas indomestizo and some areas pred black.

I have seen colombians/ecuatorians "mestizos" scoring higher SSA than chileans or argentines but not that much,

[HelloGuys]

also surprised chiapas admixed group is almost fully native american.

I am not surprise at all, that state is one of the most amerindian in México

[Argentano]

I am not surprise at all, that state is one of the most amerindian in México

There i checked so makes sense since chiapas is a state bordering Guatemala. Do you know why that mayo amerindian tribe scored higher european than chiapas admixed group?

EDITED: There i read the mayo natives are from the north of mexico that is more euro on average the the rest of mexico

https://en.wikipedia.org/wiki/Mayo_people

The Mayo or Yoreme are an indigenous group in Mexico, living in the northern states of southern Sonora, northern Sinaloa and small settlements in Durango.[1]

Interesting that the Mayo natives were more european than average admixed individual from Chiapas. Regional variations are pretty important in latin america.

[Duffmannn]

I think that "spanish" and "portuguese" are descendants, more or less recent, of spanish and portuguese in America.

It´s the most logical.

[HelloGuys]

There i checked so makes sense since chiapas is a state bordering Guatemala. Do you know why that mayo amerindian tribe scored higher european than chiapas admixed group?

EDITED: There i read the mayo natives are from the north of mexico that is more euro on average the the rest of mexico

https://en.wikipedia.org/wiki/Mayo_people




Interesting that the Mayo natives were more european than average admixed individual from Chiapas. Regional variations are pretty important in latin america.

I guess because the mayo people are a tribe of Aridoamérica, the numbers are very low if we compare them with the mesomérica cultures.

So I think that Spaniards could mixed a little more with them, prevailing the european blood in them, contrary to the mesoamerica where many natives american was not mixed, diluting the spaniard blood to the amerindians a little mixed

[Argentano]

I think that "spanish" and "portuguese" are descendants, more or less recent, of spanish and portuguese descendants in America.

It´s the most logical.

Nah those are real spaniards and portuguese. But they probably used ancestry markers that assigned some of the northeast african or something like that to AFrica . That applies to the latin american countries too.

Thats why i always like to compare national study results WITH THE SAME ANCESTRY MARKERS.

Subjects, Populations and Groups

From the 6,060 individuals genotyped for CYP2D6, CYP2C9 or CYP2C19 polymorphisms 13 , 3,387 were analyzed for individual ancestry in the present study, with the following distribution (Table 1): (i) 1,051 Native Americans from Mexico, Costa Rica and Peru, representing North, Central and South America, respectively. They live in rural populations, are locally recognized as indigenous and are settled in regions where the population is predominantly indigenous; (ii) 38 Afro-Latin Americans, that self-reported as Afro-descendants in Costa Rica and reported to have four Black grandparents in Cuba; (iii) 163 self-reported Ashkenazi Jews from Argentina; (iv) 206 Cubans that self-reported to have four White grandparents, (v) 1,442 admixed (Mestizo) in the Hispanic America; (vi) 371 Spaniards and 116 Portuguese. For Native American populations, we followed the ethno-linguistic classification by Campbell 15 (Table 1). University of Extremadura and local IRBs approved the use of studied sample for the present study.

This is the info for the barplots. Spaniards are from Extremadura

Figure 1. Genomic ancestry of studied individuals and populations and African Yoruba (Nigerians) from the 1000 Genomes Project, based on the 83 ancestry informative markers (AIMs). (A) Principal Component (PC) Analysis representation. Individuals are colored according to geographic regions. (B) Vertical barplots of individual continental ancestry.
1: African Yoruba from Nigeria, 1000 Genomes Project;
2: Spaniards from Extremadura,
3: Portuguese;
4: Ashkenazi from Argentina;
5: Ashaninka from Peru;
6: Shimaa from Peru;
7: Aymara from Peru;
8: Mexicaneros from Mexico;
9: Seris from Mexico,
10: Tepehuanos from Mexico;
11: Tarahumaras from Mexico;
12: Guarijios from Mexico;
13: Huicholes from Mexico;
14: Coras from Mexico;
15: Lacandones from Mexico;
16: E. Lacandones from Mexico;
17: Tzeltales from Mexico;
18: Mayos from Mexico;
19: Costa Rica populations: 1st: Bribri, 2nd: Chorotega, 3rd: Guaymí, 4th: Admixed population, 5th AfroCaribbeans;
20: Admixed from Mexico (DF);
21: Admixed from Chiapas, Mexico
22: Admixed from Peru;
23: Admixed from Nicaragua;
24: Admixed from Brazil;
25: Cuban,
26: Afro-Caribbeans from Cuba,
27: Admixed from Cuba;
28: Admixed from Ecuador;
29: Admixed from Argentina;
30: Admixed from Uruguay.

[Erronkari]

Argentano. In the cases of argentines, the meaning of "mixed" is it individuals self-considerated as "mixed" or diverse individuals of various subtypes?
And what's interesting is that different to other countries I've never heard here about racial census nor people self-considerated racially talking...