Fig. 2From: A gene deriving from the ancestral sex chromosomes was lost from the X and retained on the Y chromosome in eutherian mammalsPRSSLY gene structure. Exons are indicated by boxes and are drawn to scale; introns are indicated by lines and are not drawn to scale. Conserved trypsin-like serine protease domains are shaded blue. Purple and orange lines indicate putative translation start sites and stop sites, respectivelyBack to article page