Figure 3: The 12 possible differential expression states in F1 diploid hybrid and F18 allotetraploid relative to their diploid parents.

Roman numerals indicate the same categorization as used in Rapp et al. (2009), with figures schematizing their respective gene expression pattern for the R-genome in diploid maternal parent (♀), R and C-genome in F1 or F18 (P) and C-genome in diploid paternal parent (♂).