We have learned several mechanisms that can promote evolution in a population, but that's it? There is no other mechanism that can change frequency of allele in a population? The answer is positive. According to a study by Uppsala University in 2009, scientists found a special mechanism related to evolution. Interestingly, some genes in our body evolved rapidly. In other word, the speed of evolution in our DNA is different, and scientists found that there is a process called BGC ( biased gene conversion) speeds up changing of our genes, partly. Specifically, there is a trend that AT pairs will be substituted by CG pairs. It happens in everywhere, even in DNA that won't be expressed. Thus, BGC is a special mechanism that contribute to human evolution, and can cause harmful mutations and spread them to whole population.
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