Utah Code Title 76. Utah Criminal Code § 76-7-102. Incest--Definitions--Penalty

(i) blood relationships of the whole or half blood, regardless of whether the relationship is legally recognized;

(ii) the relationship of parent and child by adoption; and

(iii) the relationship of stepparent and stepchild while the marriage creating the relationship of a stepparent and stepchild exists.

(i) engages in conduct under Subsection (2)(b)(i), (ii), (iii), or (iv); or

(ii) provides a human egg or seminal fluid under Subsection (2)(b)(v).

(i) sexual intercourse between the actor and a person the actor knows has kinship to the actor as a related person;

(ii) the insertion or placement of the provider's seminal fluid into the vagina, cervix, or uterus of a related person by means other than sexual intercourse;

(iii) providing or making available his seminal fluid for the purpose of insertion or placement of the fluid into the vagina, cervix, or uterus of a related person by means other than sexual intercourse;

(iv) a woman 18 years of age or older who:

(v) providing the actor's sperm or human egg that is used to conduct in vitro fertilization, or any other means of fertilization, with the human egg or sperm of a person who is a related person.