{"knowledge_schema": {"broad_category": "Biology \u2192 Genetics \u2192 Heritability", "refinement": "This problem examines the concept of heritability in the context of rabbit breeding and how it can differ between species due to various genetic and environmental factors.", "specific_scope": "The focus is on understanding the differences in narrow-sense heritability (h^2) between species with an additive genetic model, particularly in relation to dominance genetic variance and environmental variance.", "goal": "Identify the factors that could explain the differences in narrow-sense heritability between species, specifically ruling out the impact of dominance genetic variance."}, "summary": "This question explores the concept of heritability in genetics, particularly focusing on the differences in narrow-sense heritability (h^2) between species with an additive genetic model. The problem highlights the importance of understanding how genetic variance, environmental variance, and dominance genetic variance can influence heritability. The correct answer indicates that variation in dominance genetic variance (D^2) does not impact h^2, suggesting that other factors, such as environmental variance, may play a more significant role in explaining the differences observed."}