NATURAL SELECTION

The term natural selection was one used by Charles Darwin, a well known naturalist that came up with the Theory of Evolution. The term natural selection is very crucial to evolution, it is the process in which certain species adapt to their environment by breeding with other members of that species that carry certain traits that help the species’ ability to survive . Darwin coined the phrase “survival of the fittest”, which talks not about how fit a certain organism is needed to be in order to survive, but how a species needs certain characteristics which help the population survive in a certain habitat or ecosystem. Natural selection is widely accepted by groups of scientists as the explanation for adaptations in evolution (Grabianowski, science.howstuffworks.com). While most look at natural selection throughout other organisms, humans themselves have adapted throughout history and are still evolving through natural selection. Some might argue that humans are so advanced that they no longer need natural selection to survive. This is untrue due to the fact that humans are still evolving. If humans are still evolving, natural selection is still a major role in the human genome.

Natural selection itself plays a vital role in human existence and gene expression as well. The most common type of natural selection in humans is purification, or a negative selection. This type of selection is when a certain mutation is weakened but, this also puts the carrier of this gene at some sort of disadvantage in their environment. The point of natural selection is to move such deleterious genes (genes that have negative effects) from the population. The purification selection does is best to make sure this gene does not take over the population...

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...rker the skin color of the person and the colder the climate the paler the person skin color. This is not only due to the sun’s UV ray but also so the person is best adapted for the climate. Certain genes that code for skin cells will go through a certain type of selection that affects their skin color based on their environment.

In all actuality, most of the human species is relatively evolved compared to all the other organisms in the world, but they are far from the perfect beings. Adaptation and evolution will always be a part of survival for the human race, there is no way humans can survive without the process of natural selection. It has played a major part in survival in the past and is sure to affect the human race for generations to come. Natural selection has not just contributed in the survival of the human race, but of all the organisms on Earth.