Fig. 2: Genomic signals of sex differentiation in P. phoxinus.
From: Different sex determination systems in two closely related Eurasian minnow (Phoxinus) species
Combined visualisation of SNP-based analysis of sex differentiation. Identified sex-associated windows on (a) chromosome 3 (47.14–47.16 Mb) and b chromosome 12 (21.27–21.28 Mb) are highlighted with a red line. c Results of k-mer-based analysis. Normalised counts of the most significant top k-mers (P = 1.18 × 10⁻¹¹) per megabase across all chromosomes. 170 top k-mers were assembled into two contigs. d Total counts of significant sex-specific k-mers across the genome. Genotype heatmap for the SNPs within the sex-associated windows identified on (e) chromosomes 3 (total of 632 SNPs) and f chromosome 12 (total of 225 SNPs). Heterozygous states are shown in turquoise, homozygous reference states in dark blue, and homozygous alternative states in ocean blue. Males show more heterozygosity (turquoise); females are mostly homozygous (dark shades), consistent with an XY sex-determining system.
