What Is the Logic Behind a Twin Study

question 56

Multiple Choice

What is the logic behind a twin study?

• A) If monozygotic twins, who show 100% genetic similarity, have greater behavioral concordance on a given trait than dizygotic twins do, that trait is at least partially genetically determined.
• B) If dizygotic twins, who show 100% genetic similarity, have greater behavioral concordance on a given trait than monozygotic twins do, that trait is at least partially genetically determined.
• C) If monozygotic twins, who show 100% genetic similarity, have greater behavioral concordance on a given trait than dizygotic twins do there is a gene for the trait that these twins share.
• D) If dizygotic twins, who show 100% genetic similarity, have greater behavioral concordance on a given trait than monozygotic twins do there is a gene for the trait that these twins share.

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Definitions:

Inverse Demand Curve

A graph illustrating the relationship between price and quantity demanded, showing price on the Y-axis and quantity on the X-axis, essentially reversing the axes of a standard demand curve.

Marginal Costs

The increase in the full cost incurred by generating an additional unit of a product or service.

Perfect Price Discrimination

A pricing strategy where a seller charges each buyer their maximum willingness to pay, capturing the entire consumer surplus.

Total Profits

The total income of a business after subtracting total expenses from total revenue, showing the final earning.