Evolution and Lamarck - species started out simple and...

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Evolution and Lamarck Lamarckian Inheritance The second part of Lamarck's mechanism for evolution involved the inheritance of acquired traits. He believed that traits changed or acquired over an individual's lifetime could be passed down to its offspring. Giraffes that had acquired long necks would have offspring with long necks rather than the short necks their parents were born with. This type of inheritance, sometimes called Lamarckian inheritance, has since been disproved by the discovery of hereditary genetics. An extension of Lamarck's ideas of inheritance that has stood the test of time, however, is the idea that evolutionary change takes place gradually and constantly. He studied ancient seashells and noticed that the older they were, the simpler they appeared. From this, he concluded that
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Unformatted text preview: species started out simple and consistently moved toward complexity, or, as he termed it, closer to perfection. Introduction Darwin Darwin is considered the father of evolution. In truth, Darwin arrived at his theory of evolution at the same time another scientist, Alfred Russell Wallace, came to the same conclusion. However, Darwin was a respected scientist even before he wrote On the Origin of Species, while Wallace was relatively unknown, so people were more inclined to listen to Darwin. Origin enjoyed immediate success: its first printing sold out immediately and a second printing following a month later. Darwin's ideas found their way out of the scientific world and into the business world and even society itself. In many senses, Darwin's theories created a societal transformation....
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