Understanding Gene-Environment Interactions

Very Hard Unit 2: Biological Bases Genetics And Behavior

In the study of genetics and behavior, researchers often examine the interplay between inherited traits and environmental influences. One significant topic within this field is the concept of gene-environment interactions, which highlights how both genetic predispositions and environmental factors contribute to individual differences in behavior. A classic example involves personality traits such as extraversion and neuroticism.

Considering these aspects, which of the following statements most accurately reflects the principles of gene-environment interactions in the context of behavioral traits?

Identical twins reared apart often show greater behavioral similarities than fraternal twins reared together.

Gene-environment interactions imply that environmental factors have no effect on genetically influenced traits.

Individuals with a predisposition for a specific behavior will exhibit that behavior regardless of their environmental conditions.

The same environmental factors can produce different behavioral outcomes depending on an individual's genetic makeup.

More extreme environmental factors have a uniform effect on all individuals regardless of their genetic background.

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