Table 1.

Varied Usages of the Term ‘Homoeology’ in Different Areas of Research

Context	Definition	Refs
Recombination	Homoeologous: ‘sequences that are similar but imperfectly matched’	[96]
Cytogenetics	Homoeologous chromosomes: ‘those which once were homologous, i.e. essentially identical, but have become so different that they rarely pair [during meiosis]’	[97]
Evolutionary biology	Homoeologous: ‘duplicated genes or chromosomes that are derived from different parental species and are related by ancestry’	[98]
Computational biology	Homoeologs: ‘orthologs between subgenomes’	[35]
This review	Homoeologs: pairs of genes or chromosomes in the same species that originated by speciation and were brought back together in the same genome by allopolyploidization