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xenologue
This is a highly specialized technical term used exclusively in genomics, bioinformatics, and evolutionary biology. It describes a specific type of homology where a gene is shared between species not because of a common ancestor, but because of horizontal gene transfer (HGT).
In academic discourse, it is critical to distinguish a xenologue from an orthologue (genes evolved from a common ancestral gene via speciation) and a paralogue (genes evolved via duplication within a genome). Using "xenologue" incorrectly in a biological paper would be a significant scientific error, as it implies a specific mechanism of genetic acquisition (lateral transfer) rather than vertical inheritance.
Because it is a niche scientific term, it is never used in casual conversation or general contexts. It appears almost exclusively in peer-reviewed literature, textbooks on molecular evolution, and specialized laboratory discussions.
意味
例文
The researcher identified a xenologue that had moved from a bacterium to a fungus.
Is this sequence a true orthologue or actually a xenologue from another species?
The presence of a xenologue suggests an ancient horizontal gene transfer event.
I wonder if this specific xenologue provides the organism with antibiotic resistance.
I wonder if this specific xenologue provides the organism with antibiotic resistance.
We must distinguish between a paralogue and a xenologue to map the evolutionary tree correctly.
This protein is encoded by a xenologue acquired via viral integration.
This protein is encoded by a xenologue acquired via viral integration.
Wait, so the gene is a xenologue because it came from a completely different lineage?
The analysis revealed several xenologues within the genome of the extremophile.