Talk:Air Nomads/@comment-760881-20101124204016/@comment-3068994-20101208232404

I don't know how credible this source is, but this says twins are not genetically identical: Science Daily

Anyway no bending is not wholly based on genetics. However; it does factor into it. How so? We don't know the specifics, just that it's one of many factors that determine whether a person will be a bender and if so, what type.

We don't know and Bryke never stated having fully developed what it is that makes a bender, a bender. There's spirituality involved; there's a hint of genetics that's readily apparent through each nation/family, and yes genes can skip a generation/etc.

So finally; genetics being responsible? It is and it isn't.