A gene-environment interaction is subtler than a gene-environment correlation because interactions result from differences between the phenotype and genotype of a child.

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Gene-environment interaction refers to the situation where the effect of exposure to an environmental factor on the development of a trait or a disease depends on a person's genotype, or conversely, the effect of a genotype on a trait or disease risk is dependent on the environmental context. It is not about the differences between phenotype and genotype but about how different genotypes respond to environmental factors.

A Gene-Environment Interaction Is Subtler Than a Gene-Environment Correlation Because