Fig. 2

Association of sex with SNP markers on LG5-14 in family 2, with comparisons to other mapping studies. a Association plotted as the negative log of Fisher’s exact test p value of marker alleles with sex (top), aligned to A. burtoni genome scaffolds ordered and oriented to LG5 and LG14 of the O. niloticus genome assembly (bottom). In A. burtoni, LG5 and LG14 are fused relative to other cichlids. Lines on association plot indicate sliding window analysis of association data (window, 10 SNPs; step, 1 SNP). b Comparison of sex-associated markers with previous mapping studies in cichlids, with numbers linking to references. Colored bars indicate range of sex-associated markers relative to A. burtoni scaffolds above in a. Kudo et al. [31] described association with sex without indicating an XY or ZW system. Roberts et al. [21] mapped the orange blotch (OB) pigmentation allele, tightly linked to a W sex determination allele