Board Thread:Theories and Speculation/@comment-1872728-20160229033316/@comment-1872728-20160321114703

Thekillman wrote: I don't think the Uzumaki are more "special" than the Senju. it's just more recognizable. Senju pass down their abilities mainly through teaching, so their descendants can't inherit their ancestors' abilities through genetics (e.g. Tsunade), although one could be taught by an ancestor to achieve similar skills and experiences, even if they're not a Senju (e.g. Hiruzen).

Uzumaki pass down their abilities mainly through breeding, so their descendants can inherit their ancestors' abilities through genetics, even if their ancestor is not skilled or experienced (e.g. Karin).

So you can get Senju abilities by learning from them, but you can only get Uzumaki abilities by actually being an Uzumaki. That is what I'm trying to say.