Relative expression levels of the beta-carotene hydroxylase (bch) candidate gene associated with tuber flesh color. Expression of the parental clones C and E, the yellow and white fleshed tuber bulks (Y1, Y2 - W1, W2) are indicated next to the set of individual genotypes from the C × E population. Genotypes containing the dominant bch B-allele are indicated in grey while genotypes lacking this allele are represented with white bars.
Kloosterman et al. BMC Genomics 2010 11:158 doi:10.1186/1471-2164-11-158