Hemophilia is a sex-linled hereditary blood defect of males characterjed by delayed clotting of the blood which makes it difficult to control bleeding even jn the case of a minor injury. When a womaa is a carrier of classical hemophilia, there is a 50% chance that a male child will inledt the disease. If a carrier gives birth to two sons, what is the probability that both boys will have the disease? What approach to probability are you using to answer this question?