Fig. 1

Comparison of the Brahman X and Angus Y cattle chromosome pseudoautosomal regions (PARs) and adjacent sequence. The x-axis is Angus Y chromosome and y-axis is Brahman X chromosome. The cattle PAR is located between PLCXD1 and GPR143, 3286 bp distal to GPR143. The X and Y chromosome PAR genes (dark blue) share the same gene content and gene order. Gene families OBP and BDA20 are highlighted in yellow and orange. The X chromosome PAR is assembled in one contig while the Y chromosome PAR has two contig gaps. SHROOM2 is located distal to the pseudoautosomal boundary (PAB) on the X chromosome, which is found inverted on the Y chromosome X-d1 region