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Evolution is a very interesting concept in anthropology. It refers to the biological populations’ alteration of the inherited characteristics over successive generations. The processes in evolution bring diversity at each biological organization level including, individual organisms, molecules like proteins and DNA, and species. According to what we know, life on this universe actually originated and afterwards evolved from universal common ancestor. Perhaps this is what makes the subject of evolution appear more interesting since through it we get well informed about where we originated from and about our ...view middle of the document...
Gene flow is changes in the allele frequency which result from individual migration between populations. In the absence of this process, the populations can be genetically distinct by genetic drift from one another. Genetic drift is a genetic variation among the allele frequencies as a result of random chance in a population. The alleles that are in the population offspring are actually a random sample of those that the parents have. In this gene drift, chance determines whether an individual reproduces or survives. The allele frequency in a population refers to the percentage or fraction of the population gene copies as compared to the whole number of gene alleles which share a certain form.
On the other hand, macroevolution is the evolution on a scale of gene pools that are separated. The focus of macroevolution is on the change which occurs above or at the species level. In this type of evolution the newer organisms are considered as entirely new species, which are unable to mate with the ancestors. The...