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Biology, 21.06.2019 18:30
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: 3
Biology, 22.06.2019 08:50
Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells
Answers: 1
Biology, 22.06.2019 12:30
In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids
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History, 25.10.2019 23:43
Mathematics, 25.10.2019 23:43
Mathematics, 25.10.2019 23:43
Health, 25.10.2019 23:43
Mathematics, 25.10.2019 23:43
Mathematics, 25.10.2019 23:43
Mathematics, 25.10.2019 23:43
Mathematics, 25.10.2019 23:43
Mathematics, 25.10.2019 23:43