Fig. 2

Structure of the Dmrt1 gene and the polymorphisms that it contains. The horizontal cylinders and gray lines represent the exons and introns of Dmrt1, respectively, and the numbers indicate their corresponding lengths. The vertical lines show the positions of polymorphisms. The pentagon-surrounded bases are the two alleles of SNP Cyn_Z_8564889, the circled bases are the SNPs, and the orthogon-surrounded bases are indels. The polymorphisms formed two haplotypes, the upper and lower polymorphisms stand for each haplotypes, respectively