Seeds don't always grow "true". If you want fruit it is a gamble. It will takes years to get fruit. Who knows how big it will get.

The University Of Minnesota Does This under controlled cross pollination conditions,your fruit will be what it cross pollinated with. They kill thousands of tree's a year just to get that 1 honeycrisp,snow sweet, sweet tango, zestar,etc. If you happen to get that 1 special apple tree like ambrosia was you can then graft it to the type of rootstock desired. Ambrosia was discovered when all the pickers would always go to this 1 tree at break time in Canada, Good Luck Enjoy