Keith unfortunately the dwarfing is not a genetic trait but is done with the use of a dwarfing rootstock. Any seeds sprouted will not be dwarf or even semi dwarf but rather a full size 25-30 ft tree. The offspring will vary from the parent plant substantially, the chance of getting something as good or better is something like 1 in 1000 or something for apple trees. plums, peaches, and citrus come close to being true from seed with much better odds of getting something good. Domesticated apples can also revert to a wild apple when grown from seed thus giving you a tree with only small fruits. It is kind of you to offer the seeds regardless but I wouldn't include the word dwarf in the listing.
