Final answer:
Twin and adoption studies are crucial for dissecting the influence of genetics and environment on behaviors. Epigenetics also adds complexity by modifying gene expression. Animal behavior studies in natural settings can provide additional context to these findings.
Step-by-step explanation:
When considering which study design might provide you the most information about both inherited and environmental contributions to a particular behavior, twin and adoption studies in behavioral genetics provide valuable insights. These studies compare identical and fraternal twins, as well as biological and adopted siblings, to ascertain the influence of genetics versus environment on behavioral traits. The Minnesota Study of Twins Reared Apart offers robust findings indicating a strong genetic component in personality traits.
Additionally, epigenetic factors play a significant role, as they can modify the expression of genes based on environmental influences. This illustrates that while genetics provide a blueprint for potential behavioral outcomes, environmental factors are key in shaping the actual expression of these behaviors. Moreover, studying animal behaviors in different settings can further enhance understanding of the innate and learned behaviors and their adaptability to environmental changes.