Mitosis, the process by which the nucleus of a cell divides into two nuclei, each containing a complete set of the cell's chromosomes, is essential to life because it A. contains four stages for gametes. B. maintains genetic continuity from one generation to the next .C. controls cell functions to ensure successful development. D. provides energy for the cells

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.

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

What happens during the experiment stage of the scientific method