jueves, 5 de marzo de 2015

Mexico & Genetic Diversity: HBD on the cutting edge of science

Mexico holds the record for many things.  For instance, Mexico is the fattest country on the planet.  Mexico also has the highest rate of diabetes on the planet.  (Interestingly, this astronomical rate of diabetes might be a result of the Amerindian ancestry of many Mexicans.)  Although not the most violent country in the world (esp. by African standards), Mexico is a very violent county; since 2006, more than 60,000 people in Mexico have been murdered, often the result of gang / cartel rivalries.
And, according to a recent study, it also seems that Mexico might be one of the most genetically diverse countries on the planet.   Mexico hosts various groups of Amerindians, Mestizos, and very small groups of Europeans.  Interestingly, a few dimwitted Cultural Marxist creationists have tried to spin this study to evince the Cultural Marxist mantra that “biological race doesn’t exist” — as if showing that elements can be blended together demonstrates that atoms don’t exist.   Probably most stunning, however, is how shocked people are – or at least pretend to be – by this study.  Are they clueless?  Where have they been for the past couple decades?
I mean, the CIA World Fact Book for the past couple decades has been reporting that Mexico is: 60% mestizo, 30% Amerindian, and less than 10% European.
Looking at the genetic ancestry of mestizos, Rubén Lisker in 2005 found the average admixture of lower-class mestizos of Mexico City to be:  59% Amerindian, 34% European, and 6% black.


Furthermore, for the past decade at least, HBD writers have been writing on the genetic diversity of Mexico.  See Steve Sailer’s: “Importing Mexico’s Worsening Racial Inequality” or SocioBiological Musings’ “What Race Are Hispanics?“.  Also interesting is Richard Lynn’s “Pigmentocracy: Racial Hierarchies in the Caribbean and Latin America,” which explores the racial caste system of Latin America showing that the upper-classes tend to be very European, while the lower classes tend to be more Amerindian, mestizo, or mulatto.  HBD bloggers have also argued that the cultural designation of ‘Hispanic’ should be broken down into racial groupings, such as Amerindian, Mestizo, European, etc.
The general surprise by many scientists and others who should know better on this topic – the genetic racial diversity of Mexico –  only underscores how much HBD is on the cutting edge of science.  If these people had been reading HBD writers for the past decade, nothing in this study would really be a surprise.
Further Reading:
HBD Chick:  “Who Are Our Mexicans?
Sociobiological Musings: “What Race Are Hispanics?
Gregory Cochran:  “Zones of Thought
Jason Collins:   “Immigration Externalities

Medical researchers, doctors and census-takers may lump Latinos or Hispanics into one group, but a giant study of Mexican genetics shows there’s really no such thing.
Mexicans themselves show such extreme diversity that someone from the dry north is genetically as different from someone from the Yucatan as a European is from an East Asian.
The findings, published in the journal Science, are important for medical research and healthcare, the researchers said.
"In this study, we realized that for disease classification it also matters what type of Native American ancestry you have,” said Carlos Bustamante, a professor of genetics at Stanford University.
“In terms of genetics, it's the difference between a neighborhood and a precise street address."
Before the Spanish conquerers arrived in the 16th century, Mexico was inhabited by Native Americans who had carved out their own, often isolated, kingdoms. These genetic differences show up even today, the team at Stanford, the University of California, San Francisco and the Mexican National Institute of Genomic Medicine found.
"Mexico harbors one of the largest amounts of pre-Columbian genetic diversity in the Americas," said Stanford’s Dr. Andres Moreno-Estrada. "For the first time, we've mapped this diversity to a very fine geographic scale, and shown that it has a notable physiological impact on an important clinical trait: lung function."
They compared their genetic map to tests of lung function as measured by the volume of air a person can expel in one second or FEV1. They found a 7 percent difference in baseline FEV1 as they moved from populations in the western state of Sonora to Yucatan in the east.
"We were really fascinated by these results because we had expected that 500 years of population movements, immigration and mixing would have swamped the signal of pre-Columbian population structure," said Bustamante.
The differences hold even though most Mexicans are mestizos. “Today, the majority of Mexicans are admixed and can trace their ancestry back not only to indigenous groups but also to Europe and Africa,” the researchers wrote.
It will be important as medicine becomes increasingly tailored based on an individual’s genes. Their specific origin — not just a broad racial group — may provide crucial pointers.
"We can't just clump everyone together and call them European Americans or Mexican Americans,” added Dr. Esteban Burchard of UCSF.

(Source: occamsrazormag.wordpress.com, nbcnews.com)
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