[quote=@Legend]
<Snipped quote by Yatagarasu>

What do you think that could be? Something to do with your biology?
[/quote]

That's the only conclusion I can come to. If we assume that you children have a hereditary link to your mother and I, as most offspring do, then it would make sense for a mixture of the two parents' traits to be present. The problem is that this body of mine is recreated. It's not my original, or even one particularly notable in terms of biology. It's barely compatible with Storm's, so why would it mix in such a way? 
*Looks back at the pad in my hand*
Now that Shion and her halves are old enough to consent, I've finally gotten a small view into their biology, but there's no notable link between any of the samples and either your mother or I. We're basically stuck guessing, but I think we can figure it out. Knowing all that, do you have any insights on what it might be that causes this?