Biology, 22.05.2020 07:01 ashley352

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The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

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Biology, 22.06.2019 06:30

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Biology, 22.06.2019 08:10

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Biology, 22.06.2019 10:30

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