The classical example of nonadditive contributions of the two parents to allopolyploids is
nucleolar dominance, which entails silencing of one parental set of ribosomal RNA genes …

Highlights•Genomic legacies of the ancestors may affect duplicate gene evolution in
allopolyploids.•Duplicate gene loss in allopolyploids is often distinctly non …

Highlights• A single subgenome in allopolyploids may contribute to the majority of the
phenotype.• Methylation of transposons near genes is associated with subgenome …

Many plants are allopolyploids with different nuclear genomes from two or more progenitors,
but cytoplasmic genomes typically inherited from the female parent. The importance of this …

Highlights•Hybridity and ploidy induce nonadditive gene expression (activation or
silencing).•Nonadditive gene expression is largely dependent on epigenetic …

Allopolyploid speciation is widespread in plants, yet the molecular requirements for
successful orchestration of coordinated gene expression for two divergent and reunited …

Polyploidization is important to the evolution of plants. Subgenome dominance is a distinct
phenomenon associated with most allopolyploids. A gene on the dominant subgenome …

Polyploidy has occurred throughout the evolutionary history of all eukaryotes and is
extremely common in plants. Reunification of the evolutionarily divergent genomes in …

Whole-genome duplications happen repeatedly in a typical flowering plant lineage.
Following most ancient tetraploidies, the two subgenomes are distinguishable because one …

Gene-expression divergence between species shapes morphological evolution, but the
molecular basis is largely unknown. Here we show cis-and trans-regulatory elements and …