Angela
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As Reich was one of the speakers in Session 1, Mathiesen, now at U Penn, spoke during Session 2.
(For Reich, see:
I'm just going to post a few notes I made, and then screenshots of some of his posters, which are pretty self-explanatory, but certainly flesh out what was in his earlier paper.
Lactase persistence is the strongest signal of selection but not selected for until long after the start of cattle domestication
Fads gene is involved with diets heavy in marine/animal fat metabolism versus plant metabolism depending on whether it’s turned on or off.
Again, it’s not selected for until long after the change to plant, i.e. cereal eating (1000 BC)). Why? He just says maybe change in environment. At least that’s what I got out of it. He speaks extremely quickly, and it’s hard to keep up. This is what effects cholesterol levels
Amylase, which helps to break down starch, is not under selection, although they thought it would be.
Blood groups-affects disease susceptibility. O type blood carriers have more resistance to cholera. The hunter-gatherers carried more O than any modern European population.
Skin pigmentation is very difficult to predict because there are many traits working together. However, he does provide a cleaned up chart showing the percentages in the various ancient groups and comparing them to modern Europeans.
See:
https://brown.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=e01fc0e4-de79-43bc-8384-aa0700f62645
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(For Reich, see:
I'm just going to post a few notes I made, and then screenshots of some of his posters, which are pretty self-explanatory, but certainly flesh out what was in his earlier paper.
Lactase persistence is the strongest signal of selection but not selected for until long after the start of cattle domestication
Fads gene is involved with diets heavy in marine/animal fat metabolism versus plant metabolism depending on whether it’s turned on or off.
Again, it’s not selected for until long after the change to plant, i.e. cereal eating (1000 BC)). Why? He just says maybe change in environment. At least that’s what I got out of it. He speaks extremely quickly, and it’s hard to keep up. This is what effects cholesterol levels
Amylase, which helps to break down starch, is not under selection, although they thought it would be.
Blood groups-affects disease susceptibility. O type blood carriers have more resistance to cholera. The hunter-gatherers carried more O than any modern European population.
Skin pigmentation is very difficult to predict because there are many traits working together. However, he does provide a cleaned up chart showing the percentages in the various ancient groups and comparing them to modern Europeans.
See:
https://brown.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=e01fc0e4-de79-43bc-8384-aa0700f62645