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DIVISION 12. PARENT AND CHILD RELATIONSHIP 7500-7961›PART 2. PRESUMPTION CONCERNING CHILD OF MARRIAGE AND GENETIC TESTING TO DETERMINE PARENTAGE 7540-7581›CHAPTER 2. Genetic Testing to Determine Parentage 7550-7562

§ 7550.5

California Family Code · 2020-11 edition · updated 2026-10-04 · California

The following definitions shall apply to this chapter:

(a) “Combined relationship index” means the product of all tested relationship indices.

(b) “Ethnic or racial group” means, for the purpose of genetic testing, a recognized group that a person identifies as the person’s ancestry, or part of the ancestry, or that is identified by other information.

(c) “Genetic testing” means any genetic testing that complies with Section 7552.

(d) “Hypothesized genetic relationship” means an asserted genetic relationship between a person and a child.

(e) “Probability of parentage” means, for the ethnic or racial group to which a person alleged to be a parent belongs, the probability that a hypothesized genetic relationship is supported, compared to the probability that a genetic relationship is supported between the child and a random person of the ethnic or racial group used in the hypothesized genetic relationship, expressed as a percentage incorporating the combined relationship index and a prior probability.

(f) “Relationship index” means a likelihood ratio that compares the probability of a genetic marker given a hypothesized genetic relationship and the probability of the genetic marker given a genetic relationship between the child and a random person of the ethnic or racial group used in the hypothesized genetic relationship.

(Added by Stats. 2018, Ch. 876, Sec. 10. (AB 2684) Effective January 1, 2019.)

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California Family Code

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