Final answer:
Deletion in the Xp21 region of the chromosome can cause various conditions, but not Keratinitis pigmentosa. Other conditions that can arise from this deletion include Duchenne muscular dystrophy, Adrenal hypoplasia, and Retinitis pigmentosa.
Step-by-step explanation:
Deletion in the Xp21 region of the chromosome is associated with several conditions, but one condition that is not caused by this deletion is Keratinitis pigmentosa. The other conditions that can arise from this deletion include Duchenne muscular dystrophy, Adrenal hypoplasia, and Retinitis pigmentosa.
Learn more about Conditions caused by deletion in the Xp21 region of the chromosome