Achild with blood born niesseria infection well treated with gentamycin after treatment niesseria could not be culture from her blood indicating the bacteria were killed however her symptoms became worse annually nearly half of the similar patients were die explain why antibiotics treatment made her symptoms increase

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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Why does bubbling occur when vinegar mixed with baking soda