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What Was Your Favorite School Cafeteria Food?
Mashed potatoes with gravy. It was the only time you saw the kids who brought their lunch on a daily basis pony up to buy it.
The Organic Milk Business Has Gone Bad: Are You Buying Less Organic Milk?
@Doctrine:
Thanks for picking a paper that isn't biological, is 4 years old, and from a journal with an impact factor of 2.3!
Maybe you would be interested in something more relevant, informative and recent (Impact factor of 4):
Lactose digestion and the evolutionary genetics of lactase persistence. Human Genetics, 2009, Jan; 124(6): 579-91
It has been known for some 40 years that lactase production persists into adult life in some people but not in others. However, the mechanism and evolutionary significance of this variation have proved more elusive, and continue to excite the interest of investigators from different disciplines. This genetically determined trait differs in frequency worldwide and is due to cis-acting polymorphism of regulation of lactase gene expression. A single nucleotide polymorphism located 13.9 kb upstream from the lactase gene (C-13910 > T) was proposed to be the cause, and the -13910*T allele, which is widespread in Europe was found to be located on a very extended haplotype of 500 kb or more. The long region of haplotype conservation reflects a recent origin, and this, together with high frequencies, is evidence of positive selection, but also means that -13910*T might be an associated marker, rather than being causal of lactase persistence itself. Doubt about function was increased when it was shown that the original SNP did not account for lactase persistence in most African populations. However, the recent discovery that there are several other SNPs associated with lactase persistence in close proximity (within 100 bp), and that they all reside in a piece of sequence that has enhancer function in vitro, does suggest that they may each be functional, and their occurrence on different haplotype backgrounds shows that several independent mutations led to lactase persistence. Here we provide access to a database of worldwide distributions of lactase persistence and of the C-13910*T allele, as well as reviewing lactase molecular and population genetics and the role of selection in determining present day distributions of the lactase persistence phenotype.
Your paper, on the other hand, is trying to demonstrate the genetic difference based upon geography. I don't care how the mutations came to be, my point was that they exist.
Globalization, one of the points that this site takes joy in, is what propagates the mutation. People, thru random mating, are getting copies of whatever culturally-related polymorphism their parents had. So instead of having 1 or 2 mutations, we might have 3 or 4, thus cementing the lactose intolerance in the population.
Still like milk. Still don't think that it's necessary for me (although now I might want to check my SNPs). Still think you were rude in your original comment.
The Organic Milk Business Has Gone Bad: Are You Buying Less Organic Milk?
I don't drink a lot of milk. But when I found out that the organic milk didn't go off as fast I switched.
@Doctrine: Valefar is right, maybe not the most well put, but right. I'm a scientist, not spouting some random news story: The gene that is responsible for the capability of humans to digest milk sugar shuts off after childhood in most people. Notice how there is a market for lactose intolerant items? That being said, I drink/use milk because I like it. I feel bad for the farmers: they are producing a superior product, and getting screwed for it.
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I really like deep fried cauliflower. And my local place has this pizza with gorgonzola that is good.
The hangover food is veggie lo mein. I don't really know why.