Essay on Charles Darwin's Theory of Evolution by Natural Selection
2019 Words9 Pages
Evolution. Is it a fact or fiction? Darwin’s theory has had a great impact on the world today. It has caused many debates between religious authorities and those from the scientific community. This theory prompted individuals to think about the origin of life in the universe.
What distinguishes Charles Darwin from the others is the fact that he collected and provided substantial evidences and he related various branches of science such as geology, botany and biology, which helped, validate his theories. His theory of natural selection as stated by Nelson and Jurmain (1991, p.606) in the modern form is that "the evolutionary factor causes changes in allele frequencies in populations due to differential net reproductive success of…show more content…
It was not until the publication of Charles Darwin's The Origin of Species that the discussion of evolution was revived.
When non-biologists talk about biological evolution they often confuse two different aspects of the definition. On the one hand there is the question of whether or not modern organisms have evolved from older ancestral organisms or whether modern species are continuing to change over time. On the other hand there are questions about the mechanism of the observed changes... how did evolution occur? Biologists consider the existence of biological evolution to be a fact. It can be demonstrated today and the historical evidence for its occurrence in the past is overwhelming. However, biologists readily admit that they are less certain of the exact mechanism of evolution; there are several theories of the mechanism of evolution.
EVOLUTION AND FOSSIL RECORD
In the study of human evolution, two main methods of dating are used:
· Carbon-14 and potassium-argon dating. Carbon-14 dating involves the decay of radioactive C-14, which has a half-life of 5770 years. This makes this method useful for dating of recent fossils, with good accuracy, up to 50,000 years back. After 5770 years, half of the carbon-14 in a fossil decays to nitrogen-14. Since the ratio of carbon-12 to carbon-14 in a living organism remains the same as in the environment around them because the organism constantly eats and replenishes it, if it were to die, the
Darwin's Theory of Natural Selection
- Length: 601 words (1.7 double-spaced pages)
- Rating: Excellent
If you look at the people around you, are they all the same? What would happen if we lived in a world where all the food was kept 8 feet off the ground and there was absolutely no way you could get it if you weren’t tall enough? Most likely, the short people would die off. The taller ones would multiply, and before long, instead of a population of people of all sizes, you would have a population of only tall people. Living things that are best-suited, or adapted, to their environment survive and multiply. Those that are not, are unable to survive. This process is known as natural selection. This process explains how Charles Darwin’s theory of evolution can occur. The purpose of completing this lab was to demonstrate that natural selection results in populations different than the original because of the adaptations that occur as a result of the population’s environment.
During the lab, we pretended that we were “birds” that eat “beetles”. In the lab, the beetles were represented by the different colored dots. The colors that we used were blue, red, and clear. We started out with 100 dots of each color. We were instructed to gather around the room in a circle, with the dots scattered around in the center on the floor. When the lights were off, we were supposed to wait because it was “night” and we didn’t hunt at “night”. When the lights turned on, it was “morning”, and as the saying goes, “the early bird gets the worm”, or in this case the beetle. :] Everyone in the class tried to get as many beetles as possible in the time limit that was allowed. In the end, 82/100 blue beetles, 84/100 red beetles, and 14/100 clear beetles were captured.
There were different techniques/traits that were used by different people. Some people were really quick and got many beetles, and others were really slow and got very few or none at all. People also used less honorable techniques and stole from other people or they tried to get beetles at night. They figured out which techniques worked well, and which ones did not. The ones that were successful and resulted in a large amount of beetles were used multiple times, and the techniques/traits that proved less successful died out. As a result, the dominant people will reproduce and pass on their successful traits, while the less dominant will be unable to reproduce and their traits will be unable to be handed down to the next generation of offspring.
How to Cite this Page
| Essay about Reconciling Darwin's Theory of Natural Selection and Intelligent Design - Natural selection is an important component of evolution. Natural selection occurs when some members of a population are better fit for survival and reproduction than the others in that population (Phelan 284-85, 2011). The environment in which organisms live plays a part in natural selection as well. Depending on the conditions of the environment, the organisms may pass down selected traits to their offspring. These selected traits will allow for the next generation to better adapt and survive longer.... [tags: Natural Selection Essays]|
:: 8 Works Cited
|Darwin's Theory of Natural Selection Essay - 1. The number of prey decreases whilst the number of predators remains constant however, there might be an increase in the population of the fittest predator even though the total number would not change. In addition to that each predator has different capabilities and those capabilities allow them to survive much better than the other predators, for example the hands were the fittest because they were equipped with the best tools for gathering food, whilst the clothes pegs were the least effective.... [tags: Natural Selection Essays]||640 words|
|Darwin’s Theory of Natural Selection Essay - Whether it is Lamarck's theory that evolution is driven by an innate tendency towards greater complexity, Darwin's theory of natural selection, or the belief that the evolution of plant and animal life is controlled by a higher being, the process of evolution cannot be denied. Archaeological investigations have proven that species evolve over time, but the unanswered questions are " How?" and "Why?" The answer lies in Charles Darwin's theory of evolution. Charles Darwin was born in Shrewsbury, England on February 12, 1809.... [tags: Natural Selection, Evolution Essays]||663 words|
|Darwin's Theory of Natural Selection and the Evolution of Animals Essay - 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.... [tags: Natural Selection Essays]||669 words|
|Darwin’s Theory of Natural Selection Essay - In our modern society, many people believe in many different ideas. On the one side, some people believe that God created the world. Science however uses different ideas to support the idea that Darwin is famous for called Natural Selection, which is basically evolution. Every society has a different idea of where man came from. It is important to understand where man came from because that is one of the goals of science and anthropology. If we all understand that we all evolved the same, and are still possibly evolving then the different races of humans might better understand each of the other races.... [tags: Natural Selection, Evolution Essays]||520 words|
| Charles Darwin's Theory of Evolution by Natural Selection Essay - Darwin is considered by other people as the creator of Evolution. Darwin was not the only man to arrive at the theory of evolution. Darwin came to his theory of evolution at the same time as an another man who goes by the name of Alfred Russell Wallace came to the same conclusion. Wallace being relatively unknown was not respected for having the same conclusion because the fact that people were so apt to listen to the theory’s of Charles Darwin. After time Darwin published a book On the Origin of Species, and it was a big success: it’s first printing sold out immediately and a second printing sold out a month later.... [tags: Natural Selection, Evolution Essays]|
:: 3 Works Cited
|Charles Darwin’s Theory of Natural Selection Essay - The famous naturalist Charles Darwin presented the theory of natural selection. He went on many journeys on sea and on land, following his interests of the nature and the change that happens in the nature, i.e., the change in species. Following his exposure to many different kinds of birds, insects and animals, he explained Natural Selection as "presentation of favorable variations and the rejecting of injurious variations."(131). Darwin used analogies and metaphors to demonstrate that different alterations occurred in the same specie, which helped them to adapt to their surroundings.... [tags: Natural Selection Essays]||893 words|
|Charles Darwin's Theory of Evolution by Natural Selection Essay - Charles Darwin's theory of evolution centres on the idea that species compete to survive, and favorable characteristics are passed on from one generation to the next. Darwin said that evolution took place by a process of natural selection or survival of the fittest. This meant that the animals and plants best suited to their surroundings survived and were able to pass on their genes to their offspring. The ones that weren't best suited died off and didn't get the chance to reproduce.... [tags: Natural Selection, Evolution Essays]||542 words|
| Charles Darwin's Theory of Evolution by Natural Selection Essay - The question of how man evolved has been pondered for some time. Many great philosophers and explorers have made attempts to try to answer this question. Charles Darwin was one of these people. Darwin led a full life of exploration, and during these adventures, he accumulated much information about evolution. He met many explorers that had various ideas of their own about how man evolved. In discussion with these people, he figured out if what they were telling him was fact or fiction.... [tags: Natural Selection, Evolution Essays]|
:: 3 Works Cited
|Charles Darwin's Theory of Evolution by Natural Selection Essay - Other than Mendellson and his studies with genetics, Darwin has by far contributed the most to our modern science. From his theories on variation of species to his explanation of natural selection Charles Darwin has shocked the world by proving the world older than previously thought and creatures not immutable. In this present day these theories are as common belief as a simple mathematical equation such as two plus two equals four; but in the year eighteen hundred and fifty nine Darwin not only risked his reputation with these far fetched findings but also the risk of being excommunicated from the church.... [tags: Natural Selection, Evolution Essays]||1841 words|
Natural Selection Theory Of Evolution Other People Sizes Worm Beetle Charles Darwin Feet Limit
Consequently, the population will be filled with more dominance, than weakness.
The variation in beetles also played a role in which ones were captured, and which were not. The beetles that looked most like their environment were least likely to be captured. The clear beetles were the least captured, because they were well adapted to their environment. On the other hand, the blue and red beetles stuck out like sore thumbs and were captured quickly and in large numbers. So, the colored beetles that are able to reproduce will either adapt to their environment, or die out.
In conclusion, this lab was very effective in showing how natural selection works. It also helped to explain how natural selection affects Darwin’s theory of evolution. This lab was also effective in that it demonstrated that natural selection results in populations different than the original because of the adaptations that occur as a result of the population’s environment. The observations made throughout this lab have furthered my knowledge on the subject of natural selection and evolution.