Talk:Avatar/@comment-5067283-20120518032724/@comment-71.186.174.172-20120520233122

Genetically, the body of the person who is the avatar can only bend one element. But spiritually, the avatar can bend the other three (perhaps channeling it from other previous benders). Since their children are spritually not the Avatar, they would only inherit the bending of the avatar's physical body.

(at least that's my theory)

However, anything is possible in the world of fanfiction.