Here is the definition from Wiki: Introgression is a term used in genetics, particularly plant genetics, to describe the movement of a gene from one species into the gene pool of another by ...

‘Hybrid speciation’ implies that hybridization has had a principal role in the origin of a new species. The definition applies cleanly to hybrid species that have doubled their chromosome number ...

Schumer et al. (2014) consider that a case fulfils the requirements for being considered HHS if the hybridization event itself was the original trigger of RI. This criterion is based on the argument ...