Male- and female-specific linkage maps for Hyla arborea. Maps are based on 43 microsatellites and one SNP locus (Fryl), with orders according to the highest log likelihood. For LG7, marker Ha-T64 was not polymorphic in females. Genetic distances are indicated in centiMorgan (cM). Colored frames show the location of homologous loci within the Xenopus tropicalis genome (assembly 7.1, http://xenbase.org), as reported in . For clarity, simplified marker names were used (see Additional file 1 for full identifiers).