Replicator
From CasGroup
A replicator is a unit of selection, something which can be replicated and copied. It is used to refer "to any entity of which copies are made" (Keller and Lloyd, 1992). A gene or a meme are examples, because they can be subject of natural selection.
References
- Evelyn Fox Keller and Elisabeth A. Lloyd, "Keywords in Evolutionary Biology", Harvard University Press, 1992