Figure 3

Sex-specific changes of heterozygosity with age in chamois. a-b Proportions of males (blue) and females (red) within age classes being heterozygous at the MHC class II DRB locus (± standard errors of binomial proportions); thick lines are predictions from logistic regressions; bars along the x-axes (slightly spaced) visualize the number of hetero- (above) and homozygous individuals (below) in each age class. c-d Average heterozygosity of males (blue) and females (red) within age classes at 12 microsatellite loci (± s.e., thick lines are predictions from linear regressions; sample sizes of one are indicated by symbols with white dots). See text for statistics.