Final answer:
The gene on chromosome linked to late-onset Alzheimer's disease is apolipoprotein E (APOE). This gene has a variant called E4, which increases the carrier's likelihood of developing the disease.
Step-by-step explanation:
The gene on chromosome that has been linked to late-onset Alzheimer's disease is apolipoprotein E (APOE). This gene has a variant called E4, which increases the carrier's likelihood of developing the disease. Although many other genes have been identified that might be involved in the pathology of Alzheimer's disease, APOE is one of the key genes associated with late-onset form of the disease.