please help me with a word / analogy

[Yogafire]

What do you call the process when something divides or splits off from an entity to create a new (non-identical) entity? like mitosis, but not because the new entity is not a copy.
it can be a word/process from anywhere - it's the analogy I need and can't find. maybe a term from biology, physics, philosophy ??

Budding (that's what yeast does..) ?
Propagating?

All I can think off the top of my head is off shoots?
Or a subsidiary.

Splinter?

Divergence
From the OED eg "the divergence between primates and other groups"

Bit likevthe multiverse/parallel universe theory?

Tributary?

Faction? Subdivision? Segmentation? Splinter group?

I go with splinter too😀

"Dust in the xerox effect"

Parent/Child?

thanks guys. not there yet though! The new entity is not minor, or subsidiary but equal
So if there is one being, and then a whole new being emerges from the original.
An entity which produces another entity (but not in a give birth sense and without losing any of its original self). What is this process?
There must be an analogy in cell division??

Propagation, or budding.

Dust in the Xerox effect

yes budding kind of works but sounds too reproductive for the context. but budding wiki article has led me to fission, which should do it.

Thanks all!

I'm not sure that what you're after is something that actually happens is it? Not in biology anyway? Any replication/reproduction would have to involve passing on some part of the original, rather than creating an entirely independent thing?

And laws of physics, conservation of mass etc, would preclude the creation of another being without the original losing something of itself?

Binary fission?

Offshoot, subsidary, venture.

Spinoff

I don't think 'fission' fits the bill at all here - in that case, the original splits into two or more smaller parts.

Spinoff sounds the most accurate, propagate might work.

Duplication

schism? alienation? rift?

Actually you're right erol fission doesn't really work

I don't know that there is a term in biology or physics (not my fields), just thought there might be

Meiosis? It's another form of cell division separate to mitosis.

I don't know what the science would be, but it sounds like parthenogenesis, when Athena springs fully formed from the head of Zeus.

Thanks all! Mumsnet thesaurus