Introgenic

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Introgenic describes headmates (fixatives, introjects, etc.) or groups (subsystems, sidesystems, layers, etc.) that are formed from a piece of media.

It falls under the endogenic umbrella.

Related terms
This origin is similar to Fixagenic, in the way that a lot of introjects come from hyperfixations. Fixative headmates may be a part of a introgenic system.

A system may also identify as mixed origin while being introgenic, like introject heavy systems.