Fig 4. Ovule gene expression variation in tomatoes is consistent with inferred histories of introgression.

A) Histories of speciation and introgression for our chosen triplets in Solanum. B) Mean and standard error of Q₃ across all genes in each triplet. C) Difference in the number of genes with a negative vs. positive Q₃ value for both triplets. Density plots show the distribution of this difference across 10,000 bootstrapped datasets. Observed values for the two triplets relative to the bootstrap distributions are shown with arrows.