The United States has a very diverse heritage. There is no "American" race. Americans are the blending of many cultures throughout many generations. With this blending of cultures comes a blending of genes. In the past, genes have not been well understood. They were not understood until Mendel did experiments on plants to find out why different plants of the same species had different characteristics. His goal was to find the key to unlock the …
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showed last 75 words of 4302 total
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