Demonstrating the Theory of Natural Selection
In 1976 two biologists, David Reznick of the University of California at Riverside and John Endler of the University of California at Santa Barbara, traveled to the West Indies island of Trinidad to begin the first in their inclusive series of studies concerning evolution. Their studies focused on the vast population of guppies. After over a decade of researching the guppies, the two biologists came to the conclusion that the guppies were able to evolve a great amount in a small duration of time. This not only supported Darwin’s theory of evolution but more specifically his idea of natural selection. There was also one other theory which was very important, that was the life-history theory. This theory predicts that reduced adult survival will select for earlier maturation and increased reproductive effort. (Impact of predation) On other hand, reduced adolescent survival will select the opposite. This theory has only been proven in laboratory studies and cannot assess that of natural populations. In the experiment conducted by Mr. Reznick and Endler they support the predictions of the life-history theory with guppies.Natural populations of guppies (Poecilia reticulata), along the El Cedro and Aripo rivers, are found in
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Some common words found in the essay are:
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Approximate Word count = 2076
Approximate Pages = 8 (250 words per page double spaced)
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