Board Thread:Manga Discussion/@comment-27399549-20151214184558/@comment-26216483-20151214191649

There very well could be no effects. Vampires are just advanced humans, not a different species like Pillarmen. It'd be like a pro athelete breeding with a normal person, they're not guarnteed to birth another athlete. Maybe there are subtle effects like an extended lifespan but the only examples we have either get killed or have Stands that make a vampire's durability and immortality obsolete. The only facts we have are that they aren't weak to sunlight, don't have pointy teeth, and can't manipulate their bodies in extreme ways (like freezing blood or shooting pressurized body fluid from their eyes).