... proposed, the most prominent theory on evolution was that of Jean Baptiste de Lamarck. Lamarck's theory has two parts: 1) the principle of use and disuse and, 2) the inheritance of acquired characteristics. The principle of use and disuse states that if an animal frequently uses an organ then that organ will grow in strength, and if an animal does not use an ... organ it deteriorates until it eventually disappears. The inheritance of acquired characteristics states that the changes that occur in animals through the principle of use and disuse are passed on to the animal's offspring. Lam...

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• Approx Pages: 4
• Grade Level: High School

... , was not very supporting. According to his belief, evolution is supposed to produce "higher" organisms, with human beings at its ultimate goal. Lamarck's theory included inheritance of acquired characteristics, meaning that an organism's lifestyle could bring about changes that it passed on to its offspring. An example would be the fact that Lamarck believes Giraffes have long necks because ... that wild animals and plants showed variations just as domesticated animals and plants did. He filled his notebooks with records of height, weight, color, claw size, tail length, and other charact...

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• Has Bibliography
• Grade Level: High School

... of population. If left unchecked, the size of the population of a single animal or plant species would increase until the world is overrun. The second fact is the variance within the species. Individuals with the same species aren't always exactly alike. They differ in their particular characteristics. He found this out from the tortoises that he thought were different species, but they ... at an earlier time, and that those in turn had evolved out of still earlier forms." (Korey, XI). The members of the species have varied characteristics because they adapt to their surroundings, and t...

• Word Count: 1997
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• Grade Level: High School

... would be covered by the same progeny of a single pair. According to Darwin " in a state on nature almost every full-grown plant annually produces seeds and amongst the animals there are a very few which do not annually pair. In every plant and animal survive " it would rapidly stock every station in which they could anyhow exist. The Nature does its share, not ... organic being, these individuals will have the best chance of being preserved in the struggle for life. Possibly, those species will tend to produce offspring with the same or similar characteristics. This principal of preserv...

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• Grade Level: High School

... struggle for existence, for survival. He pointed out the existence of variation differences among members of the same species. From this, he suggested that the variations that prove helpful to a plant or an animal in its struggle for existence better enable it to survive and reproduce. These favorable variations are thus transmitted to the offspring of the survivors and spread to ... the entire species over successive generations. This process he called the principle of natural selection. As originally formulated, Darwinism did not distinguish between acquired characteristics, which are...

• Word Count: 1199
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• Grade Level: High School

... is a continuing struggle for existence, for survival. He pointed out the existence of variations differences among members of the same species and suggested that the variations that prove helpful to a plant or an animal in its struggle for existence better enable it to survive and reproduce. These favorable variations are thus transmitted to the offspring of the survivors and spread to ... the entire species over successive generations. This process he called the principle of natural selection. As originally formulated, Darwinism did not distinguish between acquired characteristics, whi...

• Word Count: 1110
• Approx Pages: 4
• Grade Level: High School

... up the tree. He believed that organisms are forced to become more complex. His theory was called the escalator of being. He also had another theory the inheritance of inquired characteristics which is just as it sounds that offspring could inherit learned traits. Darwin did not believe Lamark's theory of the escalator of being because Darwin believed that if all of ... was very good. These are the generations of the heavens and of the earth when they were created, in the day that Jehovah God made earth and heaven. And no plant of the field was yet in the earth, and no herb of the field ...

• Word Count: 1641
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School