The Assumption of a Twin Study That Is That Identical

question 134

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

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Definitions:

Role Ambiguities

The uncertainty or lack of clarity about the expectations, responsibilities, or duties associated with a particular role.

Resource Scarcities

A situation where there is an insufficient availability of resources to meet the demands of a population.

Win-lose Competition

A competitive situation where one party's gain is directly proportional to another party's loss.

Uncooperative

Describes behavior or actions that are not supportive or helpful towards others or a common goal.