If I bring a normal Sandslash to Alola and breed it with another

I always wondered about the last part too

It would probably be an Alolan since it's native to Alola

depends on the mother probably.

>>28349331
This, it'll probably work the same way it works for everything else.

>>28349180
1. Sandshrew
2. Depends on the mother

Same way it's always worked, no reason to believe any different.

The actual point of interest is about cubone/exeggcute/raichu. In that case either region matters, or they have different evolution requirements. The second may be more likely than you think though, because it would be strange if Alolan Vulpix evolved with a fire stone.

I guess they count as different pokemon in that aspect, then, the one that comes from the egg will share its mother’s variant.

The real question is, what happens when you transfer a Pikachu/Exeggcute/Cubone from another game and evolve it?

If I bring a Cubone from another region would it evolve into an Alolan Marowak?

Would a normal Meowth evolve into Alolan Persian regardless of not being Alolan?