Identity matrix plotting of the nucleotide sequences of MHC-B region of black grouse itself (left) and between black grouse and chicken (right). Different shading of genes indicate different MHC gene families defined from human MHC. From dark to light: Class I, Class II, Class III, others.
Wang et al. BMC Genomics 2012 13:553 doi:10.1186/1471-2164-13-553