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:

Chesapeake Planters

Wealthy landowners in the Chesapeake Bay region during the colonial period, primarily involved in the cultivation of tobacco using slave labor.

Shipbuilding Industry

A sector of the economy that designs, constructs, and repairs ships, crucial for transportation, military, and trade purposes.

Task System

A labor system used on plantations, particularly in the cultivation of rice and cotton, where enslaved people were assigned specific tasks to complete each day, as opposed to working from sunrise to sunset.

Slave

A person who is the legal property of another and is forced to obey them.