Haji and Seb Are Identical Twins Who Went to Different

question 36

Multiple Choice

Haji and Seb are identical twins who went to different adoptive families as infants. When they meet for a study at age 35, researchers find that Haji's measured IQ is 116 and Seb's is 97. Since they share the same genes and intelligence is highly heritable, how is this possible? Choose the best answer.

• A) The brothers were probably given IQ tests by researchers who scored the tests differently.
• B) IQ is not a valid indicator of ability, so people with similar intelligence often score very differently.
• C) The environment affected where on the inherited reaction range each brother's IQ developed.
• D) IQ is not controlled by genes even though intelligence is highly heritable.

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Articulated figures or models, manipulated by a puppeteer, used in performances to entertain or convey stories.

Tele-

A prefix meaning distant, used in forming words that signify communication over long distances, such as telephone or television.

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Characterized by a lack of responsibility, dedication, and professionalism in one's approach to work tasks or environments.

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Occurring or coming after the expected, scheduled, or usual time; delayed.