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White people are by definition Dairy farming populations that evolve to tolerate lactose into adulthood and thus improving their survival in low light conditions and cave dwelling.
Groups like the Amhara and Oromo are all lactose intolerant which means that they are not mixed race. East Asian people right across the Red Sea show significant lactose tolerance.
Back Migrations that occurred happened before there were White people.
All groups of people that have European admixture show lactose tolerance.
Posts: 4028 | From: NW USA | Registered: May 2005
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:rolleyes:
Posts: 12143 | From: When you have eliminated the impossible, whatever remains, however improbable | Registered: Jun 2007
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quote:Originally posted by osirion: White people are by definition Dairy farming populations that evolve to tolerate lactose into adulthood and thus improving their survival in low light conditions and cave dwelling.
Groups like the Amhara and Oromo are all lactose intolerant which means that they are not mixed race. East Asian people right across the Red Sea show significant lactose tolerance.
Back Migrations that occurred happened before there were White people.
All groups of people that have European admixture show lactose tolerance.
Then explain why people say African Americans are lactose intolerance considering that African Americans are mixed with Europeans
Posts: 861 | From: usa | Registered: Apr 2015
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quote:Originally posted by osirion: White people are by definition Dairy farming populations that evolve to tolerate lactose into adulthood and thus improving their survival in low light conditions and cave dwelling.
Groups like the Amhara and Oromo are all lactose intolerant which means that they are not mixed race. East Asian people right across the Red Sea show significant lactose tolerance.
Back Migrations that occurred happened before there were White people.
All groups of people that have European admixture show lactose tolerance.
Then explain why people say African Americans are lactose intolerance considering that African Americans are mixed with Europeans
African American actually show the gene for lactose persistence at a rate of 22. European American have that rate at 77. Nigerians have the rate at 0. This suggest that African Americans have an average admixture with Europeans at around 27%.
In North Africa its the Algerians that are the most European. We can just the lactose persistence gene to detect admixture with Europeans. This debunks theories that suggest Europeans back migrated down the Nile into Kenya producing the Kenya Capsian. We can see that West Asians show a signficant European admixture.
Posts: 4028 | From: NW USA | Registered: May 2005
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quote:Originally posted by osirion: White people are by definition Dairy farming populations that evolve to tolerate lactose into adulthood and thus improving their survival in low light conditions and cave dwelling.
why would lactose persistence improve their survival in low light conditions and cave dwelling?
and cite sources also
hunter gatherers came long before livestock domestication
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Most of the Pastoral Communities of Africa now live in the semi-arid grasslands or arid deserts where rain fed agriculture is difficult. They raise cattle, camels, goats, sheep and donkeys and they sell milk, animal skin and wool.
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Milk, meat and blood: how diet drives natural selection in the Maasai
The Maasai are a pastoralist tribe living in Kenya and Northern Tanzania. Their traditional diet consists almost entirely of milk, meat, and blood. Two thirds of their calories come from fat, and they consume 600 – 2000 mg of cholesterol a day.
The strongest signal of selection was a region on Chromosome 2 that contained the LCT gene producing lactase, the enzyme that breaks down the lactose in milk. Interestingly, the default state in all adult mammals is to stop producing lactase in adulthood – our ancestors were all ‘lactose intolerant’. This makes sense from an evolutionary point of view, it forces children to wean from milk, and frees up the mothers resources. It turns out that different sets of mutations arose that gave European and African pastoralists the ability to digest milk. Those of us whose ancestors weren’t pastoralists still have trouble digesting milk.
This is a classic example of a selective sweep – a mutation confers an advantage (the ability to digest milk), and then sweeps through a population like wildfire. This result has been previously described in European populations, and also in African populations (including the Maasai) by Sarah Tishkoff and collaborators. Given that the Maasai consume large amounts of milk, it is not surprising that we see a very strong signal at this locus.
We sequenced DNA in this region to confirm this result and, sure enough, we found that one of the lactase persistence conferring mutations identified by Tishkoff was present in the HapMap Maasai samples.
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There are even goats in Africa which have adapted to avoid capture by scaling high trees.Cows can't do that.
Moroccan tree-climbing goats don't usually excrete large seeds such as those found at the center of the argan fruits they sometimes climb 30 feet in the air to get.
Posts: 4693 | From: Saturn | Registered: Apr 2012
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Remembering that Europeans are actually Dravidian Indian Albinos - that must mean that pastoralism is also practiced in India, (note that the Albino scientists in the previous study did not mention them).Posts: 22721 | Registered: Oct 2005
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The situation for pastoralists around the world is complicated and increasingly challenging. Although there is evidence that pastoralism is a very suitable form of production and land use, especially in dryland areas, as a livelihood and culture, it has come under threat. These threats include legal, economic, social, and political disincentives, but also barriers to being able to graze and migrate with livestock. Can you explain the situation for pastoralists in India at the moment?
Recently, I read that Indian pastoralism is the worst documented of all pastoral populations. This has not improved, and we still do not know the exact population of pastoralists in India. Different experts have estimated that pastoralists make up eight to ten percent of India’s 1.2 billion population, and yet, most people know very little, if anything, about pastoralism. Many a time, when I have told my friends in India that I work with pastoralists, they are surprised to know that there are pastoralists outside Africa, and that a large population of pastoralists exists in India.
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MindOverMatter, you may be interested in this study,
It appears that domesticated sheep/goat were introduced to the Caucasus from the Fertile Crescent approx. 7,500–8,000 years ago. Very likely these goats were obtained by raids into the fertile Crescent by people living in the Southern Caucasus.
Ancient DNA analysis explains spread of domestic goats from fertile crescent into Caucasus
A research team based at Nagoya University and including members in Tokyo and Azerbaijan has revealed that goats were first introduced into the Southern Caucasus, in present-day Azerbaijan, from the Fertile Crescent around 7,500–8,000 years ago. This finding corresponds with archeological evidence showing sudden large cultural changes associated with the introduction of agriculture in this area.
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