Translations:Breeding/16/en

If two Pokémon of the same species are bred (regardless of form), the egg will have an equal chance of inheriting either parent's Poké Ball. Otherwise, the Poké Ball that the mother is in will be passed to her offspring unless the Poké Ball is a Master Ball or a Cherish Ball.
In genderless breeding if a Pokémon in the right slot of a Ranch Block has an inheritable Poké Ball (any Poké Ball aside from Master Ball or a Cherish Ball) the egg will inherit the corresponding Poké Ball. Otherwise, the offspring would inherit Poké Ball matching with the Pokémon in the left slot.