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 …

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