A person whose twin has Alzheimer's disease has ________ risk of sharing the disease if they are identical twins than if they are fraternal twins.

Question

Quizplus · Accepted Answer

Identical twins have identical genetic material, which increases their likelihood of developing Alzheimer's if their twin has the disease. Fraternal twins share only about 50% of their genes, so their risk of developing Alzheimer's if their twin has the disease is much lower. Therefore, the risk of sharing the disease is much greater for identical twins than for fraternal twins.

A Person Whose Twin Has Alzheimer's Disease Has ________ Risk