Darwin and Lamarckian Theory of Evolution

1087 Words Jul 15th, 2018 5 Pages
Introduction
Evolution is the idea of a living organism adapting or mutating to gain beneficial physiological, psychological and structural features. The genetic makeup of all living things is constantly changing, due to DNA replication errors or outside factors, some of these changes impact drastically on the organism changing it for the better or worse. Typically when an organisms genetic code is changed for the better and it reproduces and outlives its unchanged counterparts this process is called evolution.
Evolution can happen to any living organism, and is constantly happening. For a species to be “evolved” no major physical characteristics need to be changed, an evolutionary trait can be anything from changed certain cellular size
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Over time after repeatedly doing this the giraffe and its offspring had slightly taller necks and this repeated over generations till we have the giraffes that we can see today.
This theory can be applied to the procoptodon and its modern day counter-part the red kangaroo. The procoptodon has noticeable structural differences to the red kangaroo such as having a short snout, having a large horse hoof like toe on each foot and on each paw they had two extra-long fingers. Opposing to the red kangaroo having a long snout, four similar length toe feet and equal length fingers on their paws. A possible theory of why these structural features changed is that the red kangaroo’s diet is mainly sourced of grass, opposed to the procoptodons diet of leaves, shrubs and grass. A short snout would help with being able to grind leaves and shrubs, longer fingers would help with grabbing branches and a longer toe would help with jumping through these bushes. As the procoptodon started to eat more grass these features changed to help it eat that food source.
Darwin’s Theory of Evolution
Charles Darwin proposed the idea of natural selection evolution, this is where as random mutations constantly occur in animals. Certain mutations are beneficial and some are a hindrance. It is most likely that the beneficial mutated animal will survive and thus-forth pass its mutated genes onto its

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