Tuesday, March 3, 2009

Darwin

The best argument that Darwin gives for natural selection has to do with genetics. Since Mendel helped to discover genes, Darwin knew that genes were passed down from generation to generation. However, faulty genes are not going to be passed on to the next generation because if it impairs to ability to survive then it is clearly not going to be passed down because if an organism can’t reach sexually maturity then the gene is not going to be passed down. Another essential fact that helped to aid Darwin’s arguments was fossils, not necessarily dinosaurs but other organisms that people of Darwin’s generation had never even encountered. These organisms were not able to survive because for whatever reason their genes were not selected upon and the genes did not help to aid them in their survival, thus leading to their extinction. One example that Darwin gives of genes being selected on is his example of the wolves that are pressed for food. If wolves are pressed for food and the prey that they are hunting are very fast, then Darwin guarantees that the type of wolves that are going to survive are going to be the ones that can run the fastest, and therefore the rest of the wolves who are only strong and not fast will eventually die out.

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