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Big surprise this morning, 11 March 2023
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<blockquote data-quote="BSK" data-source="post: 5583446" data-attributes="member: 17"><p>Correct. Epigenetics is where certain traits become "attached" (and how is extremely complicated) to an individual's gene expression (how they express/display their genetic potential). Probably the best example of how epigenetics works is one of the original studies that discovered the process. Researchers were studying the effects of famine in Scandinavia and it was noticed that children born during a particularly severe famine were undersized and physically underperformed their whole lives, even after food resource issues vastly improved. And what was most surprising was that the children of these underperforming born-during-the-famine adults also underperformed, even though this second generation had never experienced famine. The extreme famine had "marked" children born during the process, and these epigenetic markers - which limited growth potential - were hereditary to the next generation.</p><p></p><p>The same was seen in a study of South Dakota whitetails, taking deer from the low-resource Black Hills region and keeping them side by side with genetically similar deer from nearby high-resource agricultural regions. Both groups of deer were kept in the same environment, eating the same resources, but they were not allowed to interbreed (keeping their genetics separate). It was assumed the low-performing whitetails from the Black Hills would quickly catch up to the high-performing deer from the agricultural region once food resources were equalized between the two groups. But that didn't happen. In fact, it took several generations of better food resources for the Black Hills group to catch up to the ag region deer in body and antler size. The Black Hills deer had epigenetic markers that were limiting their growth potential, and it took several generations of good food resources to lose those detrimental epigenetic markers.</p></blockquote><p></p>
[QUOTE="BSK, post: 5583446, member: 17"] Correct. Epigenetics is where certain traits become "attached" (and how is extremely complicated) to an individual's gene expression (how they express/display their genetic potential). Probably the best example of how epigenetics works is one of the original studies that discovered the process. Researchers were studying the effects of famine in Scandinavia and it was noticed that children born during a particularly severe famine were undersized and physically underperformed their whole lives, even after food resource issues vastly improved. And what was most surprising was that the children of these underperforming born-during-the-famine adults also underperformed, even though this second generation had never experienced famine. The extreme famine had "marked" children born during the process, and these epigenetic markers - which limited growth potential - were hereditary to the next generation. The same was seen in a study of South Dakota whitetails, taking deer from the low-resource Black Hills region and keeping them side by side with genetically similar deer from nearby high-resource agricultural regions. Both groups of deer were kept in the same environment, eating the same resources, but they were not allowed to interbreed (keeping their genetics separate). It was assumed the low-performing whitetails from the Black Hills would quickly catch up to the high-performing deer from the agricultural region once food resources were equalized between the two groups. But that didn't happen. In fact, it took several generations of better food resources for the Black Hills group to catch up to the ag region deer in body and antler size. The Black Hills deer had epigenetic markers that were limiting their growth potential, and it took several generations of good food resources to lose those detrimental epigenetic markers. [/QUOTE]
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Big surprise this morning, 11 March 2023
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