6450. Subject to the provisions of this chapter, a relationship of
parent and child exists for the purpose of determining intestate
succession by, through, or from a person in the following
(a) The relationship of parent and child exists between a person
and the person's natural parents, regardless of the marital status of
the natural parents.
(b) The relationship of parent and child exists between an adopted
person and the person's adopting parent or parents.
6451. (a) An adoption severs the relationship of parent and child
between an adopted person and a natural parent of the adopted person
unless both of the following requirements are satisfied:
(1) The natural parent and the adopted person lived together at
any time as parent and child, or the natural parent was married to or
cohabiting with the other natural parent at the time the person was
conceived and died before the person's birth.
(2) The adoption was by the spouse of either of the natural
parents or after the death of either of the natural parents.
(b) Neither a natural parent nor a relative of a natural parent,
except for a wholeblood brother or sister of the adopted person or
the issue of that brother or sister, inherits from or through the
adopted person on the basis of a parent and child relationship
between the adopted person and the natural parent that satisfies the
requirements of paragraphs (1) and (2) of subdivision (a), unless the
adoption is by the spouse or surviving spouse of that parent.
(c) For the purpose of this section, a prior adoptive parent and
child relationship is treated as a natural parent and child
6452. (a) A parent does not inherit from or through a child on the
basis of the parent and child relationship if any of the following
(1) The parent's parental rights were terminated and the
parent-child relationship was not judicially reestablished.
(2) The parent did not acknowledge the child.
(3) The parent left the child during the child's minority without
an effort to provide for the child's support or without communication
from the parent, for at least seven consecutive years that continued
until the end of the child's minority, with the intent on the part
of the parent to abandon the child. The failure to provide support or
to communicate for the prescribed period is presumptive evidence of
an intent to abandon.
(b) A parent who does not inherit from or through the child as
provided in subdivision (a) shall be deemed to have predeceased the
child, and the intestate estate shall pass as otherwise required
under Section 6402.
6453. For the purpose of determining whether a person is a "natural
parent" as that term is used in this chapter:
(a) A natural parent and child relationship is established where
that relationship is presumed and not rebutted pursuant to the
Uniform Parentage Act (Part 3 (commencing with Section 7600) of
Division 12 of the Family Code).
(b) A natural parent and child relationship may be established
pursuant to any other provisions of the Uniform Parentage Act, except
that the relationship may not be established by an action under
subdivision (c) of Section 7630 of the Family Code unless any of the
following conditions exist:
(1) A court order was entered during the father's lifetime
(2) Paternity is established by clear and convincing evidence that
the father has openly held out the child as his own.
(3) It was impossible for the father to hold out the child as his
own and paternity is established by clear and convincing evidence.
(c) A natural parent and child relationship may be established
pursuant to Section 249.5.
6454. For the purpose of determining intestate succession by a
person or the person's issue from or through a foster parent or
stepparent, the relationship of parent and child exists between that
person and the person's foster parent or stepparent if both of the
following requirements are satisfied:
(a) The relationship began during the person's minority and
continued throughout the joint lifetimes of the person and the person'
s foster parent or stepparent.
(b) It is established by clear and convincing evidence that the
foster parent or stepparent would have adopted the person but for a
6455. Nothing in this chapter affects or limits application of the
judicial doctrine of equitable adoption for the benefit of the child
or the child's issue.