Figure 2.

Structure of the genomic region investigated here, with localization of the five length‐polymorphic markers analyzed (arrows). Top: In X. tropicalis, Kank1 is the closest gene upstream of Dmrt1, and Dmrt3 the closest downstream. The distances indicated correspond to X. tropicalis, and might be longer in R. temporaria, because of its larger genome. Bottom: enlargement of Dmrt1; boxes denote the five exons with their respective sizes (in bp) indicated underneath. Dotted lines between exons represent introns of unknown size in R. temporaria.