People with different alleles of the gene 5-HTT have a different probability of developing depression only in the presence of stressful life events. This situation is an example of:

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This situation is an example of gene by environment interaction, as the effect of the gene on depression is dependent on the presence of a particular environmental factor (stressful life events). Gene by environment correlation refers to the possibility that individuals with certain genotypes are more likely to experience certain environments. Gene by environment association is a less commonly used term and may refer to the correlation or interaction between genes and environmental factors. Heritability refers to the proportion of variability in a trait that is due to genetic factors in a population.

People with Different Alleles of the Gene 5-HTT Have a Different