Essay about Evolution : Natural Selection And Types Of Evidence For Evolution

Essay about Evolution : Natural Selection And Types Of Evidence For Evolution

Length: 1517 words (4.3 double-spaced pages)

Rating: Better Essays

Open Document

Essay Preview

All living species will never stop evolving over time due to one important key concept incorporated in the theory of evolution: natural selection (lecture). Impressive, isn’t it? To think that this mechanism has always been present to help the survival of the breathing kind (lecture). Therefore, the objective of this essay consists of demonstrating the notions about evolution and its four mechanisms, the process of natural selection, the theory of natural selection and types of evidence for evolution.

To begin with, let’s point out what is evolution, its causes, and the mechanisms that produce it. Descent with modification is the most important understanding within the explanation of evolution (lecture). In other words, evolution signify the biological modifications from an individual to the other or from one generation to the other in a population. It’s also important to know that every evolution in the different communities on Earth had begun from a common ancestor and will keep giving offspring as long as the individuals reproduce themselves (lecture). We can interpret that as all living things on Earth are related indirectly one with another. Then, evolution happens because there is a change in gene frequency inside a population over time (lecture). This change takes place in a part of the DNA and is the reason why we differ. There are four mechanisms that allows evolution to occur: mutation, migration, genetic drift and natural selection (lecture). A mutation is a random modification in an individual DNA that can vary its attitude and appearance from its forefather (lecture). The mutation can be either favored, rejected or neutral depending on the features of the environment where the organisms found itself (WDNK, 2001). ...

... middle of paper ...

...lution and how the species genetic variation help them to survive in their environment and to spread those features to future generations. Then, I demonstrate how the theory of natural selection by Charles Darwin, which has been written with the support of his multiple observations in South America, was a revolutionary work that change how people thought. I finally testify my understanding of the subject by describing the different type of evidence for evolution with multiple examples such as dinosaur tooth, shark tooth, the forelimb of tetrapods, etc. Now that we are fully informed with the process of natural selection, it would be interesting to see how the other key concept of evolution act on all living kind.

*Sometimes a lot of paraphrasing will only be cited at the begging and the end of a paragraph because the all the information comes from the same source.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Explanation Of The Concept Of Natural Selection And How It Takes Place Essay

- Explanation of the concept of natural selection and how it takes place: Natural selection is one of the basic mechanisms of evolution wherein the “struggle for existence” will favour individuals with advantageous variations. These traits are inherited by offspring and passed down through generations. Firstly, a random mutation/variation arises. The environment and selective pressures surrounding the organism then determines whether this will be an advantageous or disadvantageous trait. This variation could be a difference in colour, smell, bone structure etc....   [tags: Evolution, Charles Darwin, Natural selection]

Better Essays
1265 words (3.6 pages)

Philosophy of Science and the Theory of Natural Selection Essay examples

- Toulmin, Hull, Campbell, and Popper have defended an "Evolutionary-Analogy" view of scientific evaluative practice. In this view, competing concepts, theories and methods of inquiry engage in a competitive struggle from which the "best adapted" emerge victorious. Whether applications of this analogy contribute to our understanding of science depends on the importance accorded the disanalogies between natural selection theory and scientific inquiry. Michael Ruse has suggested instead an "Evolutionary-Origins" view of scientific evaluative practices in which scientific inquiry is directed by application of epigenetic rules that have become encoded in homo sapiens in the course of evolutionary...   [tags: Natural Selection, Evolution Essays]

Free Essays
4356 words (12.4 pages)

Essay on Charles Darwin's Theory of Evolution by Natural Selection

- When the name Charles Darwin is uttered, an immediate association brings about the concept of Evolution. Although he was not the first to "discover" this phenomenon, he was the first to explain it. In his book, The Origin of Species, Darwin discusses evolution- through variation, why it occurs, the struggle for existence, natural selection, the geological record, and several other topics. This book brought him great recognition as well as many violent attacks. It was written in a time in history when the people were very strong believers in the Church and God....   [tags: Natural Selection, Evolution Essays]

Better Essays
1301 words (3.7 pages)

The Evidence of Evolution: On the Origin of Species Essay

- Evolution is defined as the process by which different kinds of living organisms are thought to have developed and diversified from earlier formed during the history of the Earth. Evolution is the reason we have so many different species. The basis of evolution comes from survival of the fittest. Those who do survive create an offspring even more fit for survival. The process of natural selection supports the idea of survival of the fittest and plays a key role in evolution. For species to evolve, there must be diversity present....   [tags: natural selection, on the tree of life, survival]

Better Essays
866 words (2.5 pages)

Charles Darwin and Natural Selection Essay

- One of the most influential people in modern day biology and geology is Charles Darwin. His advances in the fields still have impact to this day. His theory of Natural Selection made tidal waves through the scientific community all across the world. Darwin’s theories and studies are still a topic of conflict. Many Christians still dispute his theories, standing strong to their ideas of Creationism. Biographical Information On February 12, 1809 one of the mostly highly respected and controversial scientists was born (“Charles Darwin”)....   [tags: Creationism, Biology, Science]

Better Essays
943 words (2.7 pages)

The Variations Of Selection And How Genes That Produce Better Adaptations Become More Frequent Over Time

- This chapter covers the variations of selection. Selection is a process, a description of how genes that produce better adaptations become more frequent over time. Species don’t try to adapt to their environment. Adaptation to the environment is inevitable if a species has the right kind of genetic variation. (pg. 117) The thought that “everything happens by chance” is essentially wrong. Evolution by selection is a combination of randomness and lawfulness. First a “random” process is the occurrence of mutations that generate an array of genetic variants, both good and bad; and then a “lawful” process (natural selection) that creates these variations....   [tags: Evolution, Charles Darwin, Natural selection]

Better Essays
1314 words (3.8 pages)

The Political Implications of Darwin's Theory of Natural Selection Essay

- In 1859 biologist Charles Darwin published On the Origin of Species which laid out Darwin's theory of natural selection. Natural selection stated that an organism which possessed advantageous traits that allowed it to survive and reproduce easier than became more prevalent in the proceeding generations, eventually resulting in a differentiation of species. This is the basis of evolution and is a constantly ongoing process. Organisms that did not possess the advantageous traits were doomed to genetic extinction....   [tags: Social Darwinism]

Better Essays
864 words (2.5 pages)

Evidence for Evolution Essay

- Evolution and Diversity
 Evolution and Diversity The foundation for the theory of evolution was laid by Charles Darwin (Rose, n.d.). He developed hypotheses about natural selection which helped scientists develop the theory. Evolution is a theory and not a hypothesis because evolution has been proven by vast amounts of scientific data, research, and testing. The definition of a hypothesis is an educated explanation that needs to be researched and tested but has not yet been proven (Earman, 1984)....   [tags: Scientific Research ]

Better Essays
916 words (2.6 pages)

Essay on The Hypothesis Of Genetic Drift

- Emlen and Zimmer discussed that one of the foundations for the null hypothesis from which Kimura was a big advocate lies on the fact that genetic drift could be at times the sole responsible for evolution (even if natural selection does not occur). It wasn’t until the second half of the 1960s that Kimura established his whole neutral evolution theory; nevertheless, it is well known that mutations can often bypass the action of selection. In other words, it is known that selection works to increase fitness potential in individuals, but there are some types of mutations that don’t affect the fitness whatsoever....   [tags: Natural selection, Evolution]

Better Essays
1040 words (3 pages)

Essay about Charles Darwing and The Theory of Evolution

- ... In October 1825 Darwin went to Edinburgh University where his grandfather studied to study medicine with a view to becoming a physician. He soon realized that he does not like the study of medicine and could not bear the sight of blood or suffering. So here changed schools and went to Cambridge to become a clergyman. Then he soon noticed he would like to be a naturalist. His theory of evolution by natural selection is what he is best known for today and is now the unifying theory of life sciences explained where all of the mindbogglingly heterogeneous kinds of living things came from and how they became exquisitely adapted to their particular environments....   [tags: biology, galapagos, natural selection]

Better Essays
807 words (2.3 pages)