Jean Baptiste Lamarck and Charles Darwins Theories of Evolution

986 Words Jul 15th, 2018 4 Pages
Introduction

Evolution is the gradual, continuous change of characteristics throughout a population or a species over many generations. It is the moderation of characteristics that can alter an entire population over a long period of time and is the theory that explains the variation in each generation of an organism.
Charles Darwin’s theory was natural selection, the survival of the fittest and the struggle for existence, which had a great impact on selective breeding. Organisms that were well-adapted to their environment had more tendency to survive and reproduce, providing their genetic characteristics for future generations whilst those less-adapted organisms were more likely to be decreased in amount. Charles Darwin’s theory also
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The elephants tusk is a modified tooth made of ivory, they are used for digging, debarking trees, moving object and making contact with one another. The elephant uses it’s large ears, that can be up to 180cm wide, to cool their blood and distribute it around their bodies to decrease their body temperature by fanning themselves. Their big ears also contain many blood vessels that give off body heat to help the African elephant survive the hot weather.

Lamarckian Evolution
The Lamarckian theory would explain that the Woolly Mammoth changed in ways to adapt to the change of the environment. Lamarck would have believed that the Mammuthus primigenius would have sheded it’s thick coat of hair to survive as the weather increased in temperature. The Mammoth’s ears would have gotten bigger in size as they would have stretched to fan themselves to keep cool due to the hot climate. Their trunks would have slightly gotten longer because they stretched to reach leaves higher up in trees, this would have been because the trees had gotten taller. All these characteristic modifications were then passed onto future generations.

Darwinian Evolution
The Woolly Mammoth would have had to adapt to the major climate change. Some mammoth’s would have had larger ears than others, had less hair, been shorter than others and have had longer trunks. They would have had to learn how to defend themselves by traveling in groups to survive. The fittest mammoth would have survived to reproduce
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