in.tro.gres.sion

n.（名詞）
Infiltration of the genes of one species into the gene pool of another through repeated backcrossing of an interspecific hybrid with one of its parents.
基因滲入：一物種的基因通過不斷地與另一物種基因的親代種間逆向雜交，而滲透進(jìn)另一物種基因庫的過程

來源：
From Latin intrôgressus [past participle of] intrôgredo [to step in]
源自 拉丁語 intrôgressus [] intrôgredo的過去分詞 [進(jìn)入]
intrô- [intro-]
intrô- [前綴，表.在…內(nèi)部.]
grado [to step] * see ingress
grado [跨步] *參見 ingress

【引伸】
in.trogres.sive