|Genetic linkage map of barley Vogelsanger Gold x Tystofte Prentice. Map positions in centimorgans (Kosambi). Letters following clone or primer numbers distinguish different polymorphisms produced by a single clone or primer. The frequency (%) of the allele derived from T. Prentice is shown in brackets. **, and *** signify significant differences from the expected 50% at the 1% and 0.1% level, respectively.