Evolution As An Example Of Evolution By Natural Selection

Comment Powered by Li 1 UCOR 1620 02 Darwin & the idea of Evolution Mingxi Li(Jessie) Mar. 8th, 2017 Assignment 3 Argument against Evolution by Natural Selection Abstract Natural selection is one of the numerous theories that attempt to explain the evolution of living things from their primitive origins to the more advanced organisms existing today. At its core, this theory supports the notion that only the strongest organisms survive in a changing environment while their weak counterparts die off. Nevertheless, various circles regard the evolutionary theory by natural selection as practically impossible. Since its conception, proponents of the theory have defended it with the help of

Lastly is artificial selection, which was one of the main pieces of evidence that Darwin used to identify his theory on evolution. Darwin studied and showed how the selective breeding of crops and animals led to highly specialized varieties with unique traits. By studying this he was able to see first hand how evolution can occur by artificial selection. An example would be the Great Dane. Thousands of years ago, the Great Dane was a medium sized breed, but due to artificial selection, humans were able to create a large breed of Great Dane.

Evolution: Charles Darwin's theory was that species change over time, or evolve, in response to their environment. A good example of this is the evolution of the Kangaroo. Approximately 55 MYA the kangaroos looked quite similar to a possum and it was a tree dweller with a prehensile tail, but as Gondwana split up, the rainforests disappeared, the climate became hotter and the land dry and arid, the kangaroo evolved along the way and have come to look like what they do now.

As well as this, certain blood proteins are found in a number of species. When genetic code (DNA and RNA) is used by a cell, it builds amino acids in a sequence, which forms protein. Chemical tests can determine whether one species has the similar blood proteins to another, thus showing evidence of evolutionary relationships. Organisms with a common ancestor have a close number of amino acid sequences in common. For example, chimpanzees and humans have no difference in their amino acid protein count in their haemoglobin – evidence for a common ancestor.

The descendants of the species have been given changes from their ancestors. This is called natural selection. Natural selection is a type of evolution that animals go through when there is a hardship in their natural habitat. Most animals go through natural selection to survive, they can pass it on to their kin.

The reason for this is because a lot of organism that are around today were closely related a one point ("Comparative Anatomy."Pg.1). Sometimes these similarities are conscious. A good example of anatomy that are humans and primates and also crocodiles and alligators ("Comparative Anatomy."Pg.1). Even species that are far off even humming birds and whales. When looking at these different species you see the natural selection happening in each of these by how their anatomy gets better suited for their environment ("Comparative

Evolution through natural selection is not a controversial topic. It is not controversial because religion preaches that the maker made each individual species. Many times religion teaches that each individual has a purpose and is created for a reason. Evolution claims that living species can change over time and give rise to new kinds of species, with the result that all organisms ultimately share a common ancestry. That being so, people can believe in both. In a religious view people can be correct and people who believe in evolution can also be correct. Evolution can be true for religion that the maker has made each individual species, he/she started it all with one species and through time the world has changed

Natural selection does not make the species unconditionally perfect. For instance, a rhino with two horns may have a better chance at defending itself than a rhino with one horn. A rhino with one horn may have a better chance at defending itself than a rhino with one horn. Though a rhino with one horn may be in the same environment as a rhino with two horns, they both have the ability to defend themselves if another animal attacks. However, natural selection and evolution is unavoidable. It is something that is always going to happen. As long as the environment can change, a species can change.

In doing research for an example of natural selection, I came across antibiotic resistant bacteria. This has become one of the biggest threats to the healthcare community and Center for Disease Control. Through the use of antibiotics in treatments that are not necessarily bacterial infections, as well as the over use and misuse of antibiotics, bacteria have evolved in ways making the antibiotics used against them useless. If a bacteria manages to survive through a dose of an antibiotic, they are capable of mutating and can transfer their DNA to other bacteria. The new bacteria multiply quickly and spread to other parts of your body or outside of your body to a new host. Once the bacteria have mutated and its DNA has been transferred to

The idea of anthropocentrism provides comfort to humans. It posits that in this messy, incomprehensible world, we are still the central species. This idea allows, and even encourages, humans to view the world through a very anthropological lens and assume that, because we are the dominant and most important species, nature works in human terms and is the domain of man. The idea of creationism is very anthropocentric itself. In the Hebrew Bible, man was created before all other animals and designed in God’s image. He was given domain over nature by God as well. This idea of human supremacy and exceptionalism has persisted into modernity, but the advent of Darwin’s evolutionary theory altered human’s perception of themselves and the natural world.

Evolution is the change of traits of a species over several generations. A famous biologist named Charles Darwin, theorized that evolution happens by natural selection. Many people believe that evolution requires millions of years but scientists believe that evolution can occur rather quickly. In Today’s world, we have better health care, food, shelter and hygiene. Some might question if our advanced medicine and technology can lead to a stop in evolution, but in fact we are still evolving according to some scientists (Neild). There has been much debate and controversy over this statement but there is no concrete proof to say that humans are not evolving. In fact, there is evidence that evolution is happening at this very moment. For example,

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.

Evolution refers to change over time due to natural selection as organisms adapt and diverge to produce multiple descendant species (Huxley L., Walter M., 2005, p. 698). Two pillars which form the basis of all current knowledge of evolution originate from the historical record of evolutionary change, fossil record and the study of the process of evolutionary change, specifically the effect of natural selection. Recent developments in science, including molecular and developmental biology, have greatly contributed to the understanding of biological diversity and how evolution has changed multiple species, particularly the human species (Losos J., 2014, pp. 3).

Adaptationism is the belief that the traits seen in organisms are the results of evolution by natural selection. There are different forms of adaptationism and many different definitions as to what an adaptation is, with some believing it is impossible to test a hypothesis about an adaptation at all. This essay will look at a) how to define adaptation b) different forms of adaptationism and c) consider the different methods of testing whether a phenotype is an adaptation.

Darwin’s theory of evolution is the most commonly accepted theory because of the strong evidence that the theory is built on. One of the most famous examples of Darwin’s theory is the Galapagos finches. Darwin observed different finches from different islands of the Galapagos. He found that the finches from all the different islands had differently evolved beaks. Darwin