23 October 2014
In individuals living in the Arctic, researchers have discovered a genetic variant that arose thousands of years ago and likely provided an evolutionary advantage for processing high-fat diets or for surviving in a cold environment; however, the variant also seems to increase the risk of hypoglycemia, or low blood sugar, and infant mortality in today’s northern populations. The findings provide an example of how an initially beneficial genetic change could be detrimental to future generations.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/DI-3HyFx87Q/141023131653.htm
