Human examples of the Evolutionary Process

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Genetic Mutation : Its Consequence In Human Evolution

The forces of evolution through natural selection , gene flow , genetic mutation , genetic flow and genetic drift continue to act on human populations and have demonstrably altered allele frequencies since the origin of agriculture . These have brought interest to anthropologists geneticists , doctors and many other people that several studies has been made which aim for the improvement of adaptation and cure of genetic diseases

On June 24 , 2004 , msnbc reported about a German boy not yet turned

5 who possesses muscles that is double the size of other kids same with his age and half of their body fat . DNA testing showed that the boy has a genetic mutation that boosts muscle growth wherein the boy 's mutant DNA segment seemed to prevent the production of a certain protein called myostatin whose function is to limit the muscle growth . Seven years prior to this news , researchers at Johns Hopkins University in Baltimore had led to the creation of a mighty mice ' by deactivating the gene that stimulates cells responsible for the production of myostatin Researchers would not reveal the German boy 's identity but said he was born to a 24-year-old former professional sprinter that is rather muscular and the mother 's brother and three other close male relatives all were extraordinarily strong and one of them is a construction worker that can care and unload heavy curbstones using one hand . One copy of the child 's gene that came from the mother is mutated while the other is normal and the boy has two mutated copies . One almost definitely came from his father , but no information has been revealed about the father This kind of mutation is very rare in people ADDIN EN .CITE msnbc20042 2243msnbcGenetic mutation turns tot into superboy : 4-year-old is first documented human case , scientists saymsnbc msnbc2004March 3 2008http /www .msnbc .msn .com /id /5278028 /2004June 24 (msnbc

Another example of genetic mutation in humans is the red hair color of some people like Peter Beattie , Nicole Kidman , Prince Harry and Michael Voss . According to genetic scientists red heads are becoming rarer and could be extinct in 100 years . The current National Geographic magazine reports that less than 2 of the world 's population has natural red hair , produced by a genetic mutation in northern Europe thousands of years ago . Because redheads are only a small percentage present in the population and people are now intermingling across the globe which widens the availability of possible partners , the chance of red hair to red hair intercourse and producing red hair offspring are getting smaller , to the extent of being extinct . The chances of having redhead becomes high if both parents are redhead . But offspring may or may not be redhead if only one of the parents is redhead . Therefore , if redheads are to be preserved , it is suggestive that people with red hair should marry Scots because an estimate of 40 of Scots carries the red...