(A) The parent and child relationship extends equally to every child and to every parent, without regard to the marital status of the parents.
(B) The parent and child relationship between a child and:
(1) The natural mother may be established by proof of her having given birth to the child, or under this article;
(2) The natural father may be established under this article; or
(3) An adoptive parent may be established by proof of adoption or under the laws of the Karuk Tribe.