The only gene that has been positively identified with the onset of Alzheimer disease encodes a protein that _____.
A) is involved in cholesterol metabolism
B) breaks down neurotransmitters
C) maintains the health of striatum cells
D) attaches amino acids to tRNA molecules
E) breaks down fatty deposits around neurons

Question

Quizplus · Accepted Answer

The gene associated with Alzheimer's disease is called ApoE (Apolipoprotein E) and its protein product is involved in cholesterol metabolism. Specifically, it helps to transport cholesterol and other lipids in the bloodstream and brain. Certain variations of the ApoE gene have been found to increase the risk of developing Alzheimer's disease, particularly the ε4 allele.

The Only Gene That Has Been Positively Identified with the Onset