Which of the Following Conditions Is the Least Likely to Be

Multiple Choice

Which of the following conditions is the least likely to be treated with gene therapy in the future?

A) hemophilia, in which a genetic mutation prevents the production of a clotting protein
B) a digestive system disorder in which a protein is not expressed that is necessary for the absorption of a nutrient
C) a neurodegenerative disease in which males inherit a mutated gene from their mothers
D) Turner syndrome, in which only one copy of the X chromosome is present instead of the usual two X chromosomes