Figure 4
Complementary effects of allele-specific expression genes contributing to transcriptome optimization of F 1 hybrids. The left two lanes of each panel show the allelic expression patterns observed in the F1s, whereas the right three lanes compare the expression levels of these genes in the hybrids (lane 4) to those in the parents (lanes 3 and 5). The genes in groups I, II, III, and IV are those with no difference between the parents, a 2- to 10-fold difference between the parents, a greater than 10-fold difference between the parents, and expression in only one parent, respectively. (A) The expression levels of monoallelic expression genes in the F1 hybrids and their parents. (B) The expression levels of preferential allelic expression genes in the F1 hybrids and their parents. (C) The expression levels of biallelic expression genes in the F1 hybrids and their parents. The short bands on the same horizontal line indicate the same gene. The expression level of each gene was normalized by log10. The vertical bars on the right correlate color in the panels with relative levels of transcription.