Figure 2.Selective breeding across populations creates signficanlty greater genetic variation across the coral genome. Distribution of allele frequencies for purebred and hybrid offspring groups consisting of warm-warm crosses (red: WW), warm-cool (yellow: WC yellow), cool-warm (blue: CW) for individually genotyped larvae reared at 27.5°C. Black lines correspond to modelled theoretically expected Hardy-Weinberg distributions of allele frequencies simulated for the three population sizes (n = WW: 34, WC: 15, CW: 19). Theoretical versus expected allele frequencies differed signficantly within population crosses (Kolmogorov-Smirnov Two-Sample test, WW: p = 1.0e-45, WC: 2.2e-46 and CW: 1.0e-45) and between purebred and hybrid crosses (WW versus WC: 2.1e-26, WW versus CW: 1.3e-21) but not between hybrids (WC versus CW: 0.34).