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Created with Fabric.js 1.4.5 The Evolutionist View vs. The Creationist View Although the mutation for lactose persistence was absent in nine ancient humans, that does not mean that there were not a decent amount of other individuals who didpossess the mutation. We cant assume that this trait wasabsent thousands of years ago (and thus had to have evolved) just by observing the lack of the trait in a few members of a large population. We cannot say for certain how old lactose persistence- associated alleles are. We cannot assume that they appeared randomly. These alleles may very well have been found in individuals before this time and thus may not have evolved at all. If a population relied primarily on dairy products for nutrition, than lactose persistence would definitely have become an advantageous trait favored by natural selection. However, if apopulation relied primarily on other food groups, being able to digest dairy would not necessarily have been an advantageous trait that became favored over time. Different aspects of culture shared among people groups should enable the passing of traits to occur in a similar fashion across different ethnic groups. The mutation for lactose persistence was not found in the DNA of eight Neolithic individuals & one Mesolithic individual that were examined by scientists.However,it is common in humans today, meaning that the trait must have evolved over time. The mutation is estimated to have come about randomly around the time when animal domestication & dairying began, somewhere between 3000 and 4500 BC. The mutation became favored by natural selection in populations in which dairy consumption is advantageous. Once it became a favored trait, the frequency of the mutation increased. The evolution of lactase persistence has occurred in the same way in other ethnic groups, such as in Africa, where three different mutations have been found to enable lactose tolerance. This proves the concept of convergentevolution: shared traits of animal domestication & dairy consumption enable evolution/natural selection to work in the same fashion across different people groups. Lactose Tolerance in Humans;f=8;t=004540 Evolutionists believe that lactosepersistence is a relatively newmutation that has become favored by natural selection over time. in the world today Lactase is a protein that breaks down lactose, the main sugar found in dairy products. Everybaby who is fed milk has a gene for lactase production. For those who are lactose tolerant,mutations keep the gene active throughout their lifetime; this is known as LACTOSE PERSISTENCE.For those who are lactose intolerant, it is turned off after they are weaned.
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