Author Question: If having a gene for Parkinson's Disease guarantees that Parkinson's Disease will develop, the ... (Read 81 times)

jwb375

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If having a gene for Parkinson's Disease guarantees that Parkinson's Disease will develop, the presence of
  the gene can be described as a
 
  A) sufficient cause. B) necessary cause.
  C) contributory cause. D) risk factor.

Question 2

In order to develop chicken pox, one must be exposed to the virus that causes chicken pox. Note, however,
  that not everyone who is exposed to the virus is affected. In other words, the virus is a
 
  A) risk factor. B) contributory cause.
  C) sufficient cause. D) necessary cause.


ilianabrrr

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Answer to Question 1

A

Answer to Question 2

D



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