Question

select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

Explanation:

• Option A: Camouflaging better helps moths survive, so this mutation is beneficial.
• Option B: Antibiotic resistance helps Staphylococcus aureus survive against methicillin, beneficial for the bacteria.
• Option C: Inhibiting HIV from entering cells helps the human organism fight the virus, beneficial.
• Option D: Uncontrolled cell division is characteristic of cancer, which harms the organism by disrupting normal tissue function and potentially leading to disease progression and death.
• Option E: A bitter taste discourages herbivores, helping the plant survive, so this mutation is beneficial.

Answer:

D. a mutation causing uncontrolled cell division