Nobody downloaded yet

Darwin and Evolution - Assignment Example

Comments (1) Cite this document
Summary
Evolution means the modification of living organisms through time as they descend from their ancestors, generation after generation. The ancestors of various species look different in their structure, behavior and physiology far back in time. …
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER98.1% of users find it useful
Darwin and Evolution
Read TextPreview

Extract of sample "Darwin and Evolution"

Download file to see previous pages Prior to Darwin, though some naturalists had speculated about modification of species, they failed to explain why and how species change. They also believed that evolution began with the special creation of only a fixed number of species. Partly influenced by Thomas Malthus' essay on the Principle of Population and stimulated by a letter from Alfred Russel Wallace, in 1859 Charles Darwin discussed in detail the evolution of species through natural selection in his famous work titled On the Origin of Species, which totally revolutionized the previous concepts of evolutionary biology. Natural selection refers to a process in which species compete and struggle for their survival according to the limited resources and conditions of their natural environment with different adaptive abilities. As individuals in a population are not same due to difference in inherited characteristics, nature only selects those individuals that are best suited to the environmental conditions, and thus rest of the population dies over time. As all the offspring in a population acquire characteristics from their ancestors, produced more than nature can support and have different reproductive characteristics, only those organisms will survive that are better adapted to the living conditions. This means that organisms with higher reproduction ability will remain due to higher probability of their descendants to survive, and other will eventually become extinct due to less survival rate of their offspring with the passage of time. Since environmental conditions are different from place to place, there will be variation in characteristics of species at different locations. Darwin concluded that populations extending over large areas or through migration might have been isolated resulting in variation of their characteristics according to varying environments. Over long periods of time, they may have diverged or evolved into separate species different from each other. For instance, Darwin found that finches he observed on the Galapagos Islands were similar to one another than they were to finches of the mainland. He also noticed that some varieties were only existent on the archipelago islands. So, he proposed that all species might have descended from a common ancestor and increase in number of species occurred through evolutionary natural selection over time rather than special creation. Question Two Darwin and other naturalists believed that variations among individuals of a species were due to mixing of traits from both male and the female. He was not aware of the heredity mechanism and different traits were regarded to be the result of blending of characteristics through generations over time. However, the concept of blending inheritance failed to describe the survival of variety as they descended through generations with time. It also failed to describe the maintenance of specific characteristics in varieties and that how new species would emerge through blending. It was 1866, when Gregor Mendel published his experimental findings on garden peas. To experiment with pure seeds, he selected a self pollinating plant. He experimented with garden peas that were different from each other in many characteristics such as their flowers were either red or white, had green or yellow seeds, and tall or dwarf. After cross-breeding generations having different characteristics, he observed that descendants from each cross possessed characteristics of only one of the parents and blending did not happen. Mendel concluded that instead of blending of certain fluids, heredity from parents was passed on to offspring through independent discrete units, particles or factoren, which were later termed as genes. The characteristic that appeared in a descendant after cross breeding was termed ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Darwin and Evolution Assignment Example | Topics and Well Written Essays - 750 words”, n.d.)
Retrieved de https://studentshare.org/biology/1443211-answering-four-questions-in-an-exam-essay
(Darwin and Evolution Assignment Example | Topics and Well Written Essays - 750 Words)
https://studentshare.org/biology/1443211-answering-four-questions-in-an-exam-essay.
“Darwin and Evolution Assignment Example | Topics and Well Written Essays - 750 Words”, n.d. https://studentshare.org/biology/1443211-answering-four-questions-in-an-exam-essay.
  • Cited: 0 times
Comments (1)
Click to create a comment or rate a document
al
aliyahfunk added comment 10 months ago
Student rated this paper as
I didn’t know how to start my text. "Darwin and Evolution" helped me out a lot! Especially the list of closing part was valuable.

CHECK THESE SAMPLES OF Darwin and Evolution

Darwin had during the Voyage of the Beagle that led to each of the component parts of his Theory of Evolution (Descent with Modi

...?The Observations of Charles Darwin during the Voyage of the Beagle and the Scientific Conclusions these allowed him to make. Introduction Charles Darwin is often considered to be the father of evolutionary theory, determining that all species present on the earth today are descended from a common ancestor. He proposed the natural selection was the process that allowed for evolution to occur and produce the wide range of different types of life that can be observed. The concepts he presented were radical at the time, although natural selection has since become the generally accepted mechanism by which evolution occurs. Darwin’s inspiration came from a...
4 Pages(1000 words)Essay

Charles darwin

...that at this time Darwin was gaining experience from the Downe where he was spending his life at that time (5). He completely devoted his life to science although he suffered from Chagas’s disease for a long period of time. It was then that he uncovered the issue of the origin of species and what came to be known as natural selection in the Darwinian Theory. By the end of 1850’s Darwin had made a lot of discoveries and finally he was able to compile all his collections in to a book named as The Origin of Species by Means of Natural Selection. Charles’s illness continued and the pro-longed illness cost his life and je died leaving 8 kids behind and numerous discoveries and books. He is greatly remembered...
5 Pages(1250 words)Essay

Darwin

.... A large number of individuals presume that the fittest are the species that are cunning, stout, smart, or gigantic. This is often not the situation. From an evolutionary point of view, the fittest species are the ones who possess a mixture of characteristics that permit them to exist and reproduce numerous offspring that consequently exist to produce offspring (Dennett 34). I support Charles Darwin’s views on natural selection because what enables members of a species to reproduce and survive is largely dependent on the surrounding at that specified moment and the mixture of characteristics that are sufficiently suitable to thrive in the species. In addition, Charles Darwin did not presume that the...
5 Pages(1250 words)Essay

DARWIN

...is discussing a theory that does not have a place for omnipotent deity, he refrains from discussing this issue boldly and leaves from for the religious people to still see a place for a deity in the new understanding of things. In fact, it is not once that a religious academic claimed that even though they did agree that evolution was real, it was only indication that God had planned it, and created creations with the power to recreate themselves, and that this was an indication that God was even greater. Darwin deliberately left these grey areas in the book, including the subsequent editions, so that he would leave a room for those who would want to look at the issues in this way. The fact that...
6 Pages(1500 words)Essay

Darwin and Evolution

...Darwin and the Evolution Theory Science and religion rarely agree and therefore researchers have always triedto understand the origin of life and all its life forms. There are several unanswered questions regarding the existence of life forms that has no solid evidences as such. Several theories have been ever since to understand the origin of man and concepts such as evolution and speciation. Charles Darwin’s theory of natural selection even though slightly debatable provides a firm insight into what might had been the basis of our existence. Based on the phenomena of natural selection and even without knowing anything about the genetic basis, Darwin’s...
3 Pages(750 words)Research Paper

Charles Darwin

...Charles Darwin Since time immemorial, scientists have been contemplating the idea that some form of evolution led to the emergence of living things across the world. Nevertheless, they lacked leadership or a universal theory to explain the dynamics of evolution (“Bio Web” 1). For many years, philosophers argued that due to the incredible complexity of nature, a supernatural being / creator must have been the creator of life (“Truth Reality” 1). However, Jean Lamarck who was a biologists and Charles Darwin made significant efforts in trying to explain the evolution of life (“Understanding Evolution” 1). Nevertheless, Charles...
6 Pages(1500 words)Research Paper

Darwin Assignment

...Is evolution reasonable, or is it completely wrong? Darwinism is definitely the most debated topic today, especially in the educational field and on the religious front. The best way is to have a consistent approach with a rational mind reasonable judgment. When we look at Darwinism we are discussing macroevolution which states that life evolved from a single organism. It points to the fact that evolution is a cosmic accident at the most. This is a scientific theory which is based on interpreted evidence and has no proof to back it up. There is no test that can prove the origins of life like we can prove a chemical reaction; it is just a theory in search of evolution which took place at a certain point in time. Evolution is more... ...
2 Pages(500 words)Essay

The Evolution Theory: Lamarck vs. Darwin

...The Evolution Theory: Lamarck vs. Darwin Jean Baptiste Lamarck was among the earliest researchers to develop the theory of evolution. According to his observations in the said field, every organism was believed to have adapted to its environment, which took place over a long period of time. These adaptations were mainly related to the way the organisms used their various parts of the body. He put forth the theory that those body parts of the organisms that were used less frequently or that were never used at all to help them survive in their environment would not be needed in future. This, according to him, is the Law of Use and Disuse. This theory of evolution was...
2 Pages(500 words)Essay

Charles Darwin

...understood is that animals with variations have the ability to adapt with the environments they live in. They have the better chance of survival and the ability to breed. They hand over their characteristics to their children. I know that it has paved the way for controversies, especially as it is one that diffuses the literal interpretation of the Book of Genesis in the Bible. I have also noted that “Populations remain roughly the same size, with modest fluctuations” and “Food resources are limited, but are relatively constant most of the time” (Charles Darwin: The theory of evolution, 2010). It has led me to the inference that surviving in such an environment is really a struggle among individuals. “In...
2 Pages(500 words)Essay

Darwin

...Darwin and Campbell on Evolution Introduction Darwin and his theory of evolution is a well accredited one by all scholars and intellectuals. He d the fact that God through nature created species and they with natural selection evolved gradually to become human beings. However, this proposition was rejected by some intellectuals as they do not believe that theological aspect was a part in human evolution. This can be clearly understood in the journal article “Was Darwin a Creationist “by Cosans Chris. On the contrary, Campbell with his journal article “Why Was Darwin Believed? Darwins Origin and the...
6 Pages(1500 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Assignment on topic Darwin and Evolution for FREE!

Contact Us