Darwins Theory of Natural Selection and the Evolution of...

Darwin’s theory of natural selection has provided us with the explanations of the processes involved in the changes of species over long periods of time. His theory was based on five major assumptions: VARIATION: When Individuals within a species differ from one another in physical characteristics and in their behaviour. HERITABILITY: Some of the variations amongst the members of species is inherited, meaning that the offspring tend to resemble their parents more than the other members of the species. COMPETITION: Members of most species produce far more offspring than can survive. If there weren’t problems with survival Darwin figured out that a pair of elephants could have about 19†¦show more content†¦However there are reasons to why some aspects of behaviour seem to change more than others during evolution (Grier +Burke). Any behaviour that allows the most effective way to use the available resources around them (eg. Bigger jaws for eating whole animals)giving the individual a quick advantage increasing reproductive success. A behaviour which will give an individual a competitive edge will likely lead them to a rapid evolution (eg. A strong male who wins all his competitions will have the right to impregnate the female allowing his genes to be perpetuated). A behaviour that is used with respect to other members of the same species (eg. Courtship or communication) is likely to show evolutionary change as this will impress prospective mates due to the large be nefits the successful behaviour brings. Lastly theShow MoreRelatedCharles Darwin s Theory Of Evolution1173 Words   |  5 Pages It is time to start believing. Evolutionary theories were first proposed by Charles Darwin in the 19th century, and 150 years later, these ideas are still being studied and proven today. Charles Darwin set the basis for these discoveries. Natural Selection and survival of the fittest are two examples of evolution. 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