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Eng. 2000 Evolution Sum.

Eng. 2000 Evolution Sum. - averages of its parents For...

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Michael Miller English 2000 The Development of Evolutionary Theory One of the first accepted theories of evolution was proposed by Jean Baptiste Lamark. He suggested the concept of “orthogenesis”, which implied that individual organisms evolve within their own lifetime. We now know that his theory is false, and that populations as a whole, rather than individual organisms, evolve over time. We are now aware of this fact thanks to Charles Darwin. Darwin proposed the theory of natural selection which in short exemplifies the thought of “survival of the fittest”. This theory is widely accepted by scientists around the globe. Darwin also had another theory alongside natural selection called “blended inheritance”. This theory focused on the thought that all offspring were
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Unformatted text preview: averages of its parents. For example, if two human parents, one short and one tall, produced offspring the child would be of medium height. This theory of Charles Darwin’s was accepted until a scientist by the name of Gregor Mendel came along in the mid – 1800s. Mendel proposed that genes from a mother and father do not blend when passed onto offspring. This theory of modern evolution was soon accepted after Mendel tested his theory by breeding pea plants. Through his experiments, Mendel concluded that genes do not blend, but in fact remain distinct and can be passed onto later generations. Mendel’s theory of non-blending inheritance and Darwin’s theory of natural selection are the two most modern and widely accepted evolutionary theories of our time....
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