The best evidence we have to date suggests that early-onset Alzheimer's is transmitted genetically in families that:
A) transmit mutations of certain protein-producing genes.
B) have many members with the sporadic form of the disease.
C) have no members with the disease but transmit genetically recessive traits.
D) do not have a clear history of the disease.

Question

Quizplus · Accepted Answer

Studies have shown that early-onset Alzheimer's disease is highly heritable and is linked to mutations in certain protein-producing genes, such as APP (amyloid precursor protein), PSEN1 (presenilin 1), and PSEN2 (presenilin 2). Therefore, choice A is the best option.

The Best Evidence We Have to Date Suggests That Early-Onset