Introgreso

Introgreso is a term with limited standard usage in scientific and general reference works. It does not appear as an established concept in major dictionaries, and in many texts it is encountered as a misspelling or regional variant of related terms such as introgression (introgresión in Spanish) or as a coined neologism in informal writing. Because of this, its meaning can be ambiguous without context.

Introgression is a well‑established concept in population genetics and evolutionary biology. It refers to the incorporation of genetic material from one species into the gene pool of another through hybridization and subsequent backcrossing. This process can introduce adaptive alleles, alter allele frequencies, and influence adaptation or speciation. Introgression is observed across plants, animals, and microbes. In applied contexts, it is used in plant breeding to transfer disease resistance or abiotic‑stress tolerance from wild relatives into crops.

Usage note: If you mean the genetic concept, the preferred term is introgression (introgresión in Spanish). If you encounter “introgreso” in a text, it is likely a typographical error or a nonstandard variant. When writing, relying on established terminology helps prevent confusion.

See also: Introgression; Gene flow; Hybridization.