Early-onset Alzheimer’s disease affects people under the age of 65. Less than five percent of people who are diagnosed with Alzheimer’s disease have this type. Many cases of early-onset Alzheimer’s disease are inherited, a type known as familial Alzheimer’s disease (FAD). Which statement is best supported by this information?
F) FAD is the result of a genetic change in one or more chromosomes.
G) Natural selection will continue to reduce the incidence of FAD.
H) FAD affects only the genes of middle-aged people.
J) Deletion of one amino acid causes FAD.