Question

Which physical mutagens are classified as ionizing radiation?

विकल्प

• X-rays, gamma rays, alpha rays, and beta rays

• Only alpha and beta rays

• All forms of radiation including UV

• UV radiation and X-rays only

Answer 1

Ionizing radiation includes X-rays, gamma rays, alpha rays, and beta rays. These high-energy forms of radiation have sufficient energy to remove electrons from atoms or break chemical bonds, causing direct DNA damage such as strand breaks and base modifications. In contrast, UV radiation is non-ionizing but causes mutations through thymine dimer formation.