Answer: Most apples available today are hybrids and will not come true from seed. As an offhand guess, I should think some of the antique varieties would have a better chance of producing viable trees however. If you don't mind crabapples, there are a few that come true from seed according to Michael Dirr's "Manual of Woody Landscape Plants". Among them is Malus hupehensis. The Sargent crabapple will reportedly also usually come true from seed although with some size variations. Have fun with your project!
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