What does the reciprocal gene-environment model propose?

The reciprocal gene-environment model proposes that there is a dynamic interplay between genetic predispositions and environmental factors. Specifically, it suggests that individuals may create or influence their own environmental risks based on their genetic tendencies. For example, a person who has a genetic predisposition towards anxiety may engage in behaviors that draw them into more stressful situations, thereby reinforcing their anxiety. This model highlights the bidirectional relationship where genetics can shape a person's environment and, in turn, how that environment can affect genetic expression or overall mental health.

The other concepts presented do not accurately capture the essence of this model. The idea that genetic predispositions are fixed and unchangeable overlooks the interaction between genetic expression and environmental influences. The notion that environmental stressors can alter DNA sequences misconstrues the model, as it emphasizes a more direct cause-and-effect relationship rather than the reciprocal nature proposed. Lastly, the belief that only environmental factors influence disorders disregards the significant role that genetic factors can play, particularly in relation to how they interact with environment. The reciprocal gene-environment model is a nuanced framework that integrates both genetic and environmental contributions, making option C the most accurate representation of its principles.