Radiation-induced mutation occurs when exposure to radiation, such as X-rays or gamma rays, causes changes in the DNA of living organisms. This type of mutation can lead to alterations in genetic information, which may affect how cells function and develop. These mutations can happen in various ways, including the breaking of DNA strands or the formation of incorrect base pairs. While some mutations may have no effect, others can lead to diseases, such as cancer, or contribute to evolutionary changes in species over time.