2009 California Family Code - Section 7650 :: Article 2. Determination Of Mother And Child Relationship

7650.  (a) Any interested person may bring an action to determine
the existence or nonexistence of a mother and child relationship.
Insofar as practicable, the provisions of this part applicable to the
father and child relationship apply.
   (b) A woman is presumed to be the natural mother of a child if the
child is in utero after the death of the decedent and the conditions
set forth in Section 249.5 of the Probate Code are satisfied.