Which of the following events makes it challenging for the Hardy-Weinberg equilibrium to be reached?
A. random mating
B. Gene flow
C. Genetic Drift
D. nonrandom mating

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.

How do symptoms created by inflammation the doctor

Which muscle is responsible for inhalation ?