n the case of the finches, if a longer beak helps them to survive, then it will pass on the characteristic of the longer beak to the next generation. Selection is the ability to create a new species from the varieties found among the already existing species. This would happen if a group from a species became separated from one another and took up different characteristics to survive, as in the case of the finches that were separated from South America and ended up in the Galapagos Islands. In the book Human Evolution, the author points out that The environment itself determines the fate of each and, in destroying a proportion, selects the remainder.(Campbell 10). Along the same lines, the author of A Century of Darwin writes that, Species as we now find them result from processes of evolutionary change and this change was directed by natural selection. (Barnett 316). The fit are basically those who fit their existing environments and whose descendents will fit future environments. The established definition of natural selection as noted in The Essentials of Physical Anthropology states that it is the genetic change, or change in the frequency of certain traits in populations due to differential reproductive success between individuals(Jurmain, et al. 24). This theory of natural selection was first established by Charles Darwin.Charles R. Darwin was the first man to really bring forth a valid explanation of evolutionary ideas. He crossed controversial lines to deliver a message that he felt obligated to deliver. The message he delivered was on a subject which the public had relatively no knowledge of. He described the way in which an individual of a species reproduced and genetically passed on variations. The species that adapted through variation was the one who survived. This is where the phrase survival of the fittest came from. As pointed out, Charles Darwin was a man ahead of his time, and his work laid the structural...
