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Microevolution Essay Example

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Microevolution. According to Darwin's theory, natural selection transforms the genetic traits in species (Freedman, 6). In this case, there is an evolution of genetic traits of the land iguana that are vital for the survival.Competition in the wild is the ultimate solution to survival. Animals with unique features survive while those with unwanted features die. Iguanas that could not survive the evolution process had no option but to die. Iguanas had to attach themselves to their parents to protection until they were mature. They adapted to feeding cacti and flowers in the wild. Competition among organisms in the same environment eliminates the weaker generation from the society. Darwin noted that the tortoises in Galapagos Island were distinctive in their particular manner (Freedman, 24).

They were very distinct, and individuals could quickly tell the island of origin. There is a close relationship between the land iguanas and the finches.That sets in another theory whose postulation supports why land iguanas are dominant in Laguna de Manialtepec, South Mexico (Darwin&Quammen, 12). The choice of food eaten by organisms and the time food takes to reach the gastrointestinal tract of the iguanas is vital in the evolution of the animal. Natural foods are broken down for energy, nitrogen, calcium among other crucial minerals. The system of the iguana's processes high-quality foods. According to Darwin, not all organisms have equal chances in the fight for survival (Darwin&Quammen, 23). The plants that have adapted to the environment are healthy and have a better chance of surviving. The fittest animals survive harsh conditions. Land iguanas reproduce to their full potential and adapt to the conditions of Laguna de Manialtepec.Gene flow is generally the transfer of genes from one population to another (Freedman, 29). The original ancestors of the land iguanas had the adaptation that helped them survive. Their migration had two effects on the population of land iguanas and the host community. Breeding managed to decrease variation in most of the organisms in Laguna de Manialtepec (Gibson&Gibson, 18).Natural selection is a means that explains the theory of modification as theory works. The theory of Charles Darwin is a landmark in the process of evolution. The theory relies on the belief that there is the formation of new and better species from the existing ones. The theory argues that t a dominant allele. Microevolution.

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