An Introduction to Evolution Essay

An Introduction to Evolution Essay

Length: 3627 words (10.4 double-spaced pages)

Rating: Powerful Essays

Open Document

Essay Preview

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. It is possible that all organisms can be traced
back to the origin of Life from one celled organims.

The most direct proof of evolution is the science of Paleontology,
or the study of life in the past through fossil remains or impressions, usually
in rock. Changes occur in living organisms that serve to increase their
adaptability, for survival and reproduction, in changing environments. Evolution
apparently has no built-in direction purpose. A given kind of organism may
evolve only when it occurs in a variety of forms differing in hereditary traits,
that are passed from parent to offspring. By chance, some varieties prove to be
ill adapted to their current environment and thus disappear, whereas others
prove to be adaptive, and their numbers increase. The elimination of the unfit,
or the "survival of the fittest," is known as Natural Selection because it is
nature that discards or favors a particular being. Evolution takes place only
when natural selection operates on apopulation of organisms containing diverse
inheritable forms.


Pierre Louis Moreau de Maupertuis (1698-1759) was the first to
propose a general theory of evolution. He said that hereditary material,
consisting of particles, was transmitted from parents to offspring. His opinion
of the part played by natural selection had little influence on other
Until the mid-19th century, naturalists believed that each species
was created separately, either through a supreme being or through spontaneous
generation the concept that organisms arose fully developed from soil or water.
The work of the Swedish naturalist Carolus Linnaeus in advancing the classifying
of biological organisms focused attention on the close similarity between
certain species. Speculation began as to the existence of a sort of blood
relationship between...

... middle of paper ...

...y different. For example, the wing of a bird and the wing of a
butterfly are analogous; both are used for flight, but they are entirely
different structurally. Analogous structures do not indicate evolutionary

     Closely related fossils preserved in continuous successions of rock
strata have allowed evolutionists to trace in detail the evolution of many
species as it has occurred over several million years. The ancestry of the horse
can be traced through thousands of fossil remains to a small terrier-sized
animal with four toes on the front feet and three toes on the hind feet. This
ancestor lived in the Eocene Epoch, about 54 million years ago. From fossils in
the higher layers of stratified rock, the horse is found to have gradually
acquired its modern form by eventually evolving to a one-toed horse almost like
modern horses and finally to the modern horse, which dates back about 1 million


     Although we are not totally certain that evolution is how we got the way
we are now, it is a strong belief among many people today, and scientist are
finding more and more evidence to back up the evolutionary theory.

Need Writing Help?

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

Check your paper »

The Evolution of Social Behavior Essay

- A defining feature of mankind is the ability to organize, and socialize with the immediate environment, which can either be the natural environment, social groups and organizations. While this feature largely relates to man’s propensity to make the best of most situations, such as living communally to offer greater protection to society members; it also relates to the innate nature of man’s curiosity. Yeats and Yeats (2007) observe that curiosity in man fuels the need to learn, and investigate, and can only be satisfied “....   [tags: Social Evolution]

Powerful Essays
1452 words (4.1 pages)

Essay about Creationism and Evolution Taught in Schools

- Creationism and Evolution taught in schools Introduction: The education of evolution and creationism in the public school system has been debatable. Charles Darwin published his conclusions of evolution in 1859. This altered the teaching of science in the public school system intensely (Armenta, 1). Several court cases have been filed against the teaching of evolution. Because of the religious conservative legislators a ban was placed on the teaching of evolution and the equal treatment of evolution and creationism or intelligent design (Armenta, 1)....   [tags: Education, Creation, Evolution, Darwin]

Powerful Essays
1933 words (5.5 pages)

Charles Darwin's Theory of Evolution Essay

- Introduction It is commonly thought today that the theory of evolution originated from Charles Darwin in the nineteenth century. However, the idea that species mutate over time has been around for a long time in one form or another. Therefore, by Darwin’s time the idea that species change from one type into another was by no means new, but was rejected by most because the proponents of evolution could not come up with a satisfactory mechanism that would explain this change. But how did Darwin come up with an acceptable theory of evolution, and how did Darwin’s proposal of natural selection impact the theory of evolution....   [tags: Natural Selection, Evolution]

Powerful Essays
3077 words (8.8 pages)

Essay about The Evolution of Evolution

- The views of society towards the creation of humanity have rapidly changed since the discovery of evolution. Nevertheless, there was a time before the world did not know the theory of evolution and the theories demonstrated by Sir Charles Darwin. Before the evolution, there were people who were subjected to religious ideologies of how mankind was created, they believed that the upper class was known to be “divine creatures”. However, the introduction of evolution leads the theory to be the base of biology and changes the minds of people all over the world....   [tags: creation, darwin, humans]

Powerful Essays
1201 words (3.4 pages)

Evolution: Mutation, Natural Selection, Genetic Drift and Gene Flow Essay

- What is evolution and how does it work. Evolution is the theory of how one form of life changes into another form. Evolution also is the change of a population’s inherited traits from generation to generation. Evolution helps to explain why an animal, human, and plant looks the way it does and acts the way it does; it gives an explanation of the history of life. Genes come in many varieties and the evolution helps to make it happen. Mutation, natural selection, genetic drift, and gene flow: the four forces that make the evolution work....   [tags: Process of Evolution]

Powerful Essays
758 words (2.2 pages)

Essay on Sexual Dimorphism and Human Evolution

- Introduction The topic of gender differences must understandably be approached with caution in our modern world. Emotionally charged and fraught with ideas about political correctness, gender can be a difficult subject to address, particularly when discussed in correlation to behavior and social behavior. Throughout history, many people have strove to understand what makes men and women different. Until the modern era, this topic was generally left up to religious leaders and philosophers to discuss....   [tags: Anthropology Dimorphism Evolution Sexuality]

Powerful Essays
2397 words (6.8 pages)

Introduction to Personality Essay

- Introduction to Personality Personality has been part of debate amongst theorists for decades. Many theories have been developed about what human personality is and how it develops. Even after so many years of research and studies, no one definition has been agreed by all theorists. This paper will briefly talk about different aspects of personality and what influence in the development of personality. A person's personality is made up with his or her interests, attitude, behavioral patterns, social role, emotional responses and other traits that continue throughout a long period of time....   [tags: Psychology]

Powerful Essays
932 words (2.7 pages)

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

- Darwin collected and described thousands of animals and plants. In South America he observed the adaptations of organisms to a variety of habitat from jungle to grassland to mountain habitats. In the temperate regions the species resembled more closely the species of the tropical regions of South America rather than the corresponding species of the temperate regions of Europe. For example, in the grasslands of Argentina there are no rabbits, however, there are rodents that resemble rabbits; these rodents are unrelated to European rabbits but are similar to other rodents in South America....   [tags: Natural Selection, Evolution Essays]

Powerful Essays
1664 words (4.8 pages)

Essay on Creation and Evolution

- Creation and Evolution Thesis: Through both scientific reasoning and consideration of personal belief, conclusions concerning the issue of creation and evolution can be reached that do not conflict with personal beliefs or scientific theory. Introduction The issue of origins has been long debated over the past century. Groups exist who believe anything from strictly the Bible creation account to abiogenesis to anything in between. Proving and/or adapting theories on the origin of the Earth and the universe, has been an ongoing process since the beginning of the twentieth century....   [tags: Creationism Science Religion Essays]

Powerful Essays
3028 words (8.7 pages)

Introduction to Psychology Essay

- Introduction to Psychology The concern about life is a main human characteristic. No matter if his concern is concentrated in himself or in persons or things that surround him and constitute his environment, everybody wants to know why people, himself included, behave the way they behave. Everybody, also, wants to improve his behavior, so as to live in harmony with himself and the society. The Greek word Psychology, is a word consisted of the words ψυχή-soul and λόγος-utterance, talk....   [tags: Papers]

Powerful Essays
1338 words (3.8 pages)