Fig. 4From: New insights into mammalian sex chromosome structure and evolution using high-quality sequences from bovine X and Y chromosomesComparison of Y chromosome X-degenerate regions in cattle and other mammals. The human Y chromosome is different from other mammals with 7 X-d regions and one unique X-transposed region (pink). Eight X-d1 genes are shared among cattle, pig and horse but the gene order and orientation are not the same. The cattle X-d2 is split into and X-d2a X-d2b regions with 2 and 3 genes respectively. The cattle Y chromosome diagram does not include the unknown heterochromatic regionsBack to article page