Fig. 3: Genomic signals of sex differentiation in P. csikii.
From: Different sex determination systems in two closely related Eurasian minnow (Phoxinus) species
a Results of k-mer-based analysis. Normalised counts of the most significant top k-mers (P = 1.54 × 10⁻⁸) per megabase across all chromosomes. 7583 top k-mers were assembled into 133 contigs across all chromosomes but chromosome 24. b Genomic distribution of these k-mer contigs along chromosome 3a and the highlighted sex-associated region. c Total counts of significant sex-specific k-mers across the genome. d Genotype heatmap for the 76 SNPs within the sex-associated region identified on chromosome 3 (from 1.493 to 1.494 Mb). Darker boxes indicate homozygosity (reference states in dark blue and homozygous alternative states in ocean blue), lighter shades (turquoise) indicate heterozygosity. Males are mostly homozygous, while females show more heterozygous genotypes, consistent with a ZW system.
