Genetic mutational damage from radiation shows what kind of relationship with dose?

Genetic mutational damage from radiation shows what kind of relationship with dose?

• A. Dose-independent
• B. Dose-dependent
• C. No relationship to dose
• D. Only at high doses

Answer: (B)

Mutational damage from radiation increases as the amount of energy deposited in the tissue rises. Each ionizing event can produce DNA lesions, and when repair fails or is misrepaired, mutations can result. Because more dose means more of these events, the probability of mutations grows with dose. That’s why the relationship is dose-dependent: higher dose yields a greater likelihood of genetic mutations. It isn’t independent of dose, nor is it limited only to high doses—mutations can occur even at lower exposures, just less frequently.

Mutational damage from radiation increases as the amount of energy deposited in the tissue rises. Each ionizing event can produce DNA lesions, and when repair fails or is misrepaired, mutations can result. Because more dose means more of these events, the probability of mutations grows with dose. That’s why the relationship is dose-dependent: higher dose yields a greater likelihood of genetic mutations. It isn’t independent of dose, nor is it limited only to high doses—mutations can occur even at lower exposures, just less frequently.