Which of the following is an example of a beneficial mutation? a mutation causing uncontrolled cell division in human tissue cells a mutation inhibiting human immunodeficiency virus from entering the host cell a mutation resulting in partial or complete loss of chlorophyll pigments in plants a mutation resulting in a squirrel being born without ovaries

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.

Which represents a negative impact of technology

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?