Martin and Matthew Are Identical Twins

question 1

Multiple Choice

Martin and Matthew are identical twins. Matthew has obsessive-compulsive disorder, but Martin does not. In a biological research study, who would be the proband?

• A) Martin
• B) Matthew
• C) Martin and Matthew's mother
• D) Martin and Matthew's older sister

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Definitions:

Demographic Factors

Characteristics of a population used in social science studies, such as age, gender, income level, education, and ethnicity.

Political Regime

The form of government or a set of rules, cultural or social norms, that regulate the operation of a government or institution and its interactions with society.

Proselytizing

The act of attempting to convert someone to another religion or belief system.

Geographic Location

A specific place or position within a larger context, defined by its longitude, latitude, and other geographical factors.