Fig. 3.

Male heterogamety in X. allofraseri is evidenced by multiple strongly sex-associated paternal SNPs (right) but far fewer sex-associated maternal SNPs (left) on the sex chromosome (Chr7L). Labeling follows Fig. 2. Gray, orange, and red dots indicate that the −log₁₀ transformed probability (P) that SNPs are associated with sex, and correspond to >0.1%, 0.1–0.05%, or the <0.05% percentiles, respectively, across maternal (left) or paternal (right) genome-wide RRGS variants. These data are from X. allofraseri family 1; data from the other two families are plotted in supplementary fig. S8, Supplementary Material online.