Check Point week 3 - body as there is a lack of use for...

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Check Point: Succession and Natural Selection So just how did the Aquatic Salamander lose its limbs and start to differ from the land dwelling Salamander’s? It is my theory that one point in time both Salamanders’s dwelled together on land and in water. Through time one of the Salamanders’s started to spend more time in that water. At first they were able to move around quite easily with their legs. Slowly the rear legs started to disappear and the legs were no longer being used to propel them through the water and a stronger and longer tail was adapted for use in the water. As for smaller the front legs. Well, it my theory that they are slowly devolving from the
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Unformatted text preview: body as there is a lack of use for them. It can be assumed that the front legs may have been more used as a means to secure their bodies to the water plants or bed rock. Another theory for the use of the front legs would be that they were used to secure the prey that they fed on. However, in both cases I think that the front legs will eventually disappear as neither above stated process are believed to be in use any more and that the tail structure tends to secure the salamander to the water plants stems and that the prey that the salamander now feeds on is smaller and easier to manage....
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This note was uploaded on 03/26/2010 for the course ETH 125 ETH 125 taught by Professor N/a during the Spring '09 term at University of Phoenix.

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