Charles Darwin is known for his groundbreaking work in evolutionary biology. Among his many contributions, The Origin of Species is the one most associated with his name. It introduces the scientific theory of evolution and suggests that species evolved over a period of many generations through a process called natural selection. Darwin's theories created much controversy among his colleagues and led to great debates. However, the enormous amount of criticism directed at Darwin convinced him to make some revisions. As a result, his future editions will differ greatly from previous versions, and he also answers some of the problems people had with his theory in later versions. Unfortunately, his edits had somewhat obscured his original argument, which is why his first edition is the best representation of Darwin's ideas. Charles Darwin begins The Origin of Species by explaining his theory of natural selection. He claims that animal and plant breeders have had a profound impact with the changes they have created among domesticated species. Darwin used the common practice of breeding animals as a way to introduce artificial selection to help readers of 1859 understand the possibility that nature is also capable of producing similar changes through the same selective process. Darwin believes that his theory of variation and heredity plays a vital role in human reproduction. However, these types of ideas were considered absurd since at the time there was no direct evidence to support the belief in genetics. The idea was that people were made up of genetic variables and that each gene would be passed on as a unit to the next generation. Consequently, Darwin argued that… middle of paper …aware that the fossil record contradicted him because it represented the fact that new species had appeared without any evidence of evolutionary ancestry. Darwin argued that the fossil record was not accurate and should not be used as an indication of whether species were suddenly introduced. He also argued that rocks containing fossils are created only through particular situations and after a long period of time since they were created. Another fossil-related issue arose after the sudden discovery of an entire group of living things at some point in the fossil record. The best example of this was with the discovery of all the basic modern types that originated from the Cambrian era. Darwin tries to argue that the imperfections of the records include these fossils. Although he had many hypotheses about it, he had no evidence to support it.