People from Mexico show stunning amount of genetic diversityPosted in Articles, Caribbean/Latin America, Health/Medicine/Genetics, Media Archive, Mexico on 2014-06-16 13:58Z by Steven |
People from Mexico show stunning amount of genetic diversity
Science
2014-06-12
Lizzie Wade, Latin America Correspondent
Imagine if people from Kansas and California were as genetically distinct from each other as someone from Germany is from someone from Japan. That’s the kind of remarkable genetic variation that scientists have now found within Mexico, thanks to the first fine-scale study of human genetic variation in that country. This local diversity could help researchers trace the history of the country’s different indigenous populations and help them develop better diagnostic tools and medical treatments for people of Mexican descent living all over the world.
The team has done a “tremendous job” of creating a “blueprint of all the genetic diversity in Mexico,” says Bogdan Pasaniuc, a population geneticist at the University of California (UC), Los Angeles, who was not involved in the research…
…When the team analyzed the genomes of 511 indigenous individuals from all over Mexico, they found a striking amount of genetic diversity. The most divergent indigenous groups in Mexico are as different from each other as Europeans are from East Asians, they report online today in Science. This diversity maps onto the geography of Mexico itself. The farther away ethnic groups live from each other, the more different their genomes turn out to be.
But most people in Mexico or of Mexican descent these days are not indigenous but rather mestizo, meaning they have a mixture of indigenous, European, and African ancestry. Do their genomes also vary by what region of Mexico they come from, or has all that local variation been smoothed out by centuries of different groups meeting, mixing, and having babies?…
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