Evolutionary Baggage The Reason You Have Canine Teeth Genes that may have been advantageous in the past may be critically unfit for individuals in today’s environment. Natural selection is not a perfect process; if an organism is “fit enough” to survive a particular environment and reproduce, its genes are passed on to the next generation this is what dawkins calls the self gene evolution through natural selection. diabetes was advantageous during the extreme cold temperatures of the Ice Age 14,000 years ago. diabetes is deleterious now, but would have conferred an advantage for individuals to survive extremely cold temperatures; this condition prevents production of insulin, keeping blood sugar levels high in the blood, which lowered the freezing point of the blood and protected the individuals with the condition. The condition has been linked to variation in the HLA genes. There is genetic evidence of a high prevalence of the condition among Scandinavian individuals, who were the direct descendants of the Northern European populations that endured the most extreme conditions during the Ice Age. This genetic evidence suggests that type diabetes was a favourable condition in the past, and can be considered evolutionary baggage in individuals today because it can cause severe health problems. This problem with evolution you cant go back you cant back you have forsigh all you can do is either adapt or die. for exciting revelations check this out https://youtube/watch?v=i0k9NyHh7TQ
Posted on: Thu, 20 Mar 2014 21:51:19 +0000
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