"The Genotype-Environment Interaction" (Landis & Haverkamp)

The genotype-environment interaction, as described by Landis and Haverkamp, refers to how an organism's genetic makeup (genotype) influences its traits, but these traits can vary depending on the environment. Essentially, the effect of genes on characteristics like growth or behavior isn't fixed; it can change based on environmental conditions. For example, a plant's genetic potential for height might be fully expressed in one type of soil but less so in another. This interaction highlights the complex relationship between genetics and environment in shaping an organism’s traits, emphasizing that neither acts alone in determining outcomes.