The question in screenshot what karyotype?

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.

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

What is responsible for the uneven heating between the poles and the equator on any given day