Which best reflects the current scientific status concerning the role of genetics factors in causing Alzheimer's disease?
A)A mutation on chromosome 17 causes Alzheimer's.
B)There is evidence that specific genes may both increase and decrease the risk of Alzheimer's disease.
C)The only genetic link is from data on individuals with both Alzheimer's and Parkinson's diseases.
D)There is no scientific evidence that Alzheimer's has a genetic component.

Question

Which best reflects the current scientific status concerning the role of genetics  factors in causing Alzheimer's disease? ​
A)A mutation on chromosome 17 causes Alzheimer's.
B)There is evidence that specific genes may both increase and decrease the risk of Alzheimer's disease.
C)The only genetic link is from data on individuals with both Alzheimer's and Parkinson's diseases.
D)There is no scientific evidence that Alzheimer's has a genetic component.

Quizplus · Accepted Answer

While there is no definitive "Alzheimer's gene," studies have shown that certain gene variants can increase or decrease the risk of developing the disease. In particular, genes related to the production and clearance of amyloid proteins in the brain have been implicated. However, genetic factors alone are not sufficient to cause Alzheimer's, as environmental and lifestyle factors also play a role.

Which Best Reflects the Current Scientific Status Concerning the Role