Answers: 1
Biology, 21.06.2019 18:30, narutoxptheninja
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.
Answers: 2
Biology, 22.06.2019 13:30, dmurdock1973
How and why organisms are hierarchically classifies
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Biology, 22.06.2019 23:00, Hamilton1757
All of these things can block a bronchus and cause collapse of a lung except
Answers: 1
The carrying capacity of any population will remain the...
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