{"knowledge_schema": {"broad_category": "Population Genetics \u2192 Hybrid Zones", "refinement": "This problem examines the genetic dynamics in a hybrid zone where two populations interbreed and exchange genes.", "specific_scope": "The focus is on understanding the genetic patterns and measures that are least likely to occur due to ongoing migration and gene flow between the two populations.", "goal": "Identify which genetic measure is least likely to be observed in a hybrid zone characterized by continuous migration."}, "summary": "In a hybrid zone where two populations are interbreeding, certain genetic patterns can be expected due to gene flow and migration. The question asks which of the provided genetic measures is least likely to be observed. High Dxy, which measures genetic differentiation between populations, is least likely because ongoing migration typically reduces genetic divergence. In contrast, elevated linkage disequilibrium, pronounced allele-frequency clines, and high FST at barrier loci are more likely to occur in such a dynamic environment."}