Which of the following statements is true about epigenetics?
A. Genes are simply the end points for biological structures.
B. Psychological traits such as dementia, aggression, and others are untraceable to epigenetic effects.
C. Epigenetics involves heritable changes to DNA that are independent of the genetic sequence yet influence its expression.
D. Epigenetic studies have confirmed that experience does not shape people's nature.
Answer: C
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You recently got a new cell phone, and have had a great time learning how to use the camera and text messaging features. One day you forget your phone, and ask to use your friend's phone to send a text message
You think it will be easy, as your friend has the exact same phone as your old phone. However, you find you have a great deal of difficulty remembering how to do this. This memory problem is caused by: a) retroactive interference. b) proactive interference. c) decay. d) lack of capacity to remember all the information.
The first step in sampling is to
a. determine the desired size of the sample b. identify the population from which the sample is to be drawn c. identify all subgroups, or strata d. identify desired attributes of the sample