Relationship between number of MHC class IIB sequence variants and residual survival probability of each MHC genotype. Note that all fish entered this analysis, i.e. both dead ones reconstructed for their MHC genotype and those that survived. Residual survival probability was calculated as the difference between survival probability if a certain genotype and the overall survival probability of the family. The quadratic polynomial (survival = -0.560 + 0.190 * Nsequence variants - 0.016 * Nsequence variants2, R2 = 0.364, F2,30 = 8.601, P = 0.001) shows that within segregating families fish with a number of 6.086 MHC class IIB sequence variants have highest chance of survival.
Wegner et al. BMC Evolutionary Biology 2008 8:124 doi:10.1186/1471-2148-8-124