Multiple Choice
The assumption of a twin study that is that identical and fraternal twins share have the same degree of environmental overlap and differ only in genetic overlap. Which of the following challenges this assumption and makes the interpretation of results from twin studies problematic?
A) identical twins have more of the environment in common with each other than fraternal twins
B) fraternal twins have more of the environment in common with each other than identical twins
C) identical twins result from one fertilized zygote dividing and fraternal twins result from two separate sperm cells
D) identical twins almost never behave identically
Correct Answer:
Verified
Correct Answer:
Verified
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