Surprisingly, only 5-10% of the genetic variation present in the human species (that is, 5-10% of the 0.1% of the genome which does varyfrompersontoperson) distinguishes one "racial" group from another.
The specific symptoms, the treatments available and the prospects for recovery varyfrom one personto another and are generally dependent on the amount and type of radioactivity, the radiation energy, the area of the body exposed, and the age and general health of the individual.