Representative PCR amplicons for bovine poly-Q encoding genes. Amplicons for a number of bovine poly-Q encoding genes were produced by PCR using genomic DNA derived from a small cattle diversity panel consisting of 8 individuals. Panels (a)-(d) highlight polymorphic genes, while panels (e) and (f) show examples of genes that were monomorphic. Each lane represents one unrelated individual. The lane order representing the 8 animals is the same for each gene. Amplicons were visualised on 3% agarose gels stained with ethidium bromide. More than one poly-Q encoding tract within a gene was signified by extension to the gene symbol (e.g. MLL3-Q3).