Preview
Preview

An Exploration of Different Theories of Evolution Essay

:: 20 Works Cited
Length: 3329 words (9.5 double-spaced pages)
Rating: Blue      
Open Document
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

An Exploration of Different Theories of Evolution


Where did we come from? It is a question that has haunted the entire history of humanity. Thousands of years ago, our ancestors sought to answer the question with myths. Today, we are still struggling with the same question—only today we seek to answer this mystery with science.

Given various observations, it seems plausible that all life arose from a few very simple organisms millions of years ago. Observations of life will raise two important (though almost paradoxical) questions: Why are there so many different kinds of life? And why do there appear to be some over-riding similarities among organisms? The diversity of life is apparent in the vast number of different species of plants and animals that exist on earth. By the mid 20th Century, there was an estimated 1 to 2 million different types of organisms. (12) Now, however, the number is even higher and is expected to continue to climb as more discoveries are made. That there are prevailing similarities among organisms is equally apparent. (13) All organisms use the same biochemical mechanisms to function. For example, all organisms use DNA and many proteins that make up cells and serve as enzymes are the same across species. (12) Also, organisms that are supposed to be closely " related" tend to share certain characteristics. For example, the bones in a whale's front flipper are arranged in much the same way as the bones in human beings' arms and both whales and humans are mammals and therefore more closely related than say humans and squid. (12) Evolution - as defined as - the theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable diff...


... middle of paper ...


...) The Limits of Darwinism , by David Berlinski
http://bostonreview.mit.edu/bostonreview/br22.1/berlinski.html

18) The RNA World , by Brig Klyce
http://www.panspermia.org/rnaworld.htm

19) Viruses: Imported Genetic Software , by Brig Klyce
http://www/panspermia.org/virus.htm

20) Encyclopedia Britannica Online
http://www.panspermia.org/virus.htm

21) http://search.eb.com/cgi-bin/dictionary?va=Evolution , Encyclopedia Britannica Online
http://www/panspermia.org/virus.htm

22) Article from US Environmental Protection Agency; published in May 1998
http://www.epa.gov/radiation/ionize.htm

23) Mutation: Causes and Repair , by McAllister; slide presentation
http://www.uta.edu/biology/mcallister/3315/17_HTML%20Folder/tsld001.htm

24) Duke Study Finds New Causes of Mutation , by Marko Djuranovic
http://www.netlink.de/gen/Zeitung/2001/010131.html


Click the button above to view the complete essay, speech, term paper, or research paper








This essay is 100% guaranteed.


Title Length Color Rating  
Creation Theories VS. Evolution Essay - One inquiry that draws curiosity is the question of how all matter and life came about on Earth in this enormous universe of stars, planets, and space. Many people believe that life is a product of random probability, while many others place their faith in a define creator. This world, Earth, is a minor fraction of an enormous universe that was created by an intelligent being, which designed all matter and living creatures, and is too unpredictable to leave the creation of the universe to the random probability of evolution....   [tags: Christian Theology]
:: 7 Works Cited
2257 words
(6.4 pages)
Term Papers [preview]
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
1297 words
(3.7 pages)
Better Essays [preview]
The Life and Theories of Charles Darwin Essay - The Life and Theories of Charles Darwin Charles Robert Darwin was the fifth child of Robert Waring Darwin and Susannah Wedgewood. He was born on February 12, 1809 in Shrewsbury, England where his father practiced medicine. He attended Shrewsbury Grammar School which was a well-kn own secondary school which concentrated on teaching classic languages. Even as a boy Darwin loved science and his enthusiasm for chemical studies earned him the name "Gas" from his friends. The headmaster at Shrewsbury, Dr....   [tags: Biography Biographies Essays] 1141 words
(3.3 pages)
Strong Essays [preview]
The Theories of Evolution by Charles Darwin Essay examples - Charles Darwin was a man of science. He had a true passion for all things involving both plants and animals. Darwin made many contributions to the field of science, but his main contribution that he is most well-known for involves his theories of evolution, or more specifically, how species tend to change over long periods of time through a process called natural selection. Natural selection is defined by Darwin as the “preservation of favorable variations and the rejections of injurious variations“ (Jacobus 900)....   [tags: natural selection, creationist, theories] 641 words
(1.8 pages)
Better Essays [preview]
Scientific Doubts about Evolution Essay examples - More and more scientists are daring to step away from evolution, as a basic argument for how life came to be and develop on the planet. It just does not hold water to explain how life started and develops. The conclusion favouring these scientists is intelligent design but at the moment this has not got the well thought out theories which evolution has. It is still in its early stages of understanding and requires far more research into what it means before it can be defined scientifically, it only can be said to imply there is a god or gods which made life and matter....   [tags: intelligent design, evolution theories] 973 words
(2.8 pages)
Better Essays [preview]
Overview of Different Theories of Motivation Essay - Cherry, Kendra. (2013). Theories of Motivation: A closer look at some important theories of motivation. http://psychology.about.com/od/psychologytopics/tp/theories-of-motivation.htm The Incentive Theory of Motivation states that people do things, such as work because of the rewards that come with. For example, a child might help his grandmother clean in order to receive cookies. His motivation is the reward of the cookies. In the working world, people get rewarded by other rewards. Some of these rewards are salary, security, and health benefits....   [tags: Motivational Theories]
:: 10 Works Cited
3360 words
(9.6 pages)
Better Essays [preview]
Creation vs. Evolution Essay - The purpose of this essay is not to prove “Darwinian” evolution, as the writer would be performing a feat already done by others, but to examine a certain track of thought amongst Creation proponents. Specifically their noting certain improbabilities of evolution's ability to “design.” I'll evade defining the individual concepts because they've all been described before, and far better than I could manage, although I'll point out that micro/macro evolution distinction is largely Creationist lingo, as is the “kind” terminology....   [tags: Evolution] 1386 words
(4 pages)
Powerful Essays [preview]
An Introduction to Evolution Essay - An Introduction to Evolution      What is Evolution. Evolution is the process by which all living things have developed from primitive organisms through changes occurring over billions of years, a process that includes all animals and plants. Exactly how evolution occurs is still a matter of debate, but there are many different theories and that it occurs is a scientific fact. Biologists agree that all living things come through a long history of changes shaped by physical and chemical processes that are still taking place....   [tags: Evolution Science Biology Essays] 3627 words
(10.4 pages)
Powerful Essays [preview]
Nietsche and Evolution Essay - Nietsche and Evolution "It is the image of the ungraspable phantom of life; and this is the key to it all." -Melville In 1859 Charles Darwin offered a theory that seemed to disprove the longstanding explanation of the Origin of existence. Darwin's theory of evolution proposes a convincing argument that the universe was not created for a purpose, with intention, by a conscious God, but rather, was a phenomenon of random change. Fredrick Nietzsche articulated the gravity of the effect of Darwin's theory on society....   [tags: Religion Creationism Evolution Essays] 1173 words
(3.4 pages)
Strong Essays [preview]
Human Evolution Essay - For centuries, man has been curious about his origins and the origins of the life surrounding him. Countless explanations have been formulated using “evidence” that “proves” the story to be true. However, in 1859, Charles Darwin published a monumental theory in his book called The Origin of Species. In his book, Darwin outlined his theory of evolution by natural selection (Darwin, 1859). Although complex, this story is extremely useful in explaining the origins and history of life as we know it....   [tags: The Future of Human Evolution]
:: 5 Works Cited
1016 words
(2.9 pages)
Strong Essays [preview]