Why is determining the genetic contribution to the onset of stroke difficult?
A)Stroke classification and phenotype remain heterogeneous.
B)Comorbidities mask the symptoms and delay the diagnosis.
C)Environmental risk factors have equal contribution to the problem.
D)Often the person with a stroke cannot provide accurate family information.

Question

Quizplus · Accepted Answer

Strokes are heterogeneous, which makes it difficult to classify them and sort out causes. Whenever there is a lot of variation in the phenotype, it is likely that there are different genes involved in the pathogenesis. Environmental risk factors, such as smoking, are important as well. Comorbidities also make finding genetic causes difficult. It is most likely that the genetic contribution to stroke is the result of many genes working together, with each exerting a small effect.

Why Is Determining the Genetic Contribution to the Onset of Stroke