Acouple’s genetic counselor shows them magnified photographs of each parent’s chromosomes arranged on a chart according to size and structure. what is this chart called?

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 similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

The idea of spontaneous generation was disproved by in a experiment involving jars of meat