Brian Is an Adopted Child Who Lives with Three Siblings

question 57

Multiple Choice

Brian is an adopted child who lives with three siblings, all biological children of his adoptive parents. Brian's math skills are far better than those of his adoptive parents or his adoptive siblings. This provides evidence that _____.

• A) shared familial influences play a stronger role than was previously believed
• B) genes may have a stronger effect than familial environment on talents
• C) few environmental effects on personality come from outside the family
• D) Brian's own initiative to excel is greater than that of his adoptive family

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Definitions:

Premises

The initial statements or propositions in an argument from which conclusions are logically derived; the foundational basis for further reasoning.

Valid

A quality of an argument when its conclusions logically follow from its premises, regardless of the truth of the premises.

Mitosis

A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

Meiosis

A type of cell division that reduces the chromosome number by half, resulting in the production of four gamete cells, fundamental for sexual reproduction.