Physical map of POU5F1. A. Lines indicate locations of polymorphisms and octagons indicate locations of two unscanned segments of intron 1. B. Predictions of evolutionarily conserved elements in the gene using sequences from 17 vertebrates by PhastCons (Siepel et al., 2005). C. Untranslated regions (thin bars), exons (thick bars), and introns (black hatched lines) of POU5F1 and a flanking gene, TCF 19. Direction of transcription is indicated by the arrows.