Not only the genetics, but those 3 literally represent the true spirit of MJ; they've been soaking up everything MJ since birth like sponges. That' why the whole world loves them and are fascinated by them. They in fact ARE MJ, a version clean and pure with no tainting of sexual scandal, skin change, and weirdness.. So they are part of restoring MJ's image.
Blanket does have a deep voice, and it seemed as though he didn't want Paris coaching him, like, "I can do this by myself". :lol: I have the hunch that little Blanket is going to come out of his shell, and be quite the lively charmer, judging from those older youtube vids of him being silly on his computer.