1-1-201. Terms of wide applicability. (1) Unless the context requires otherwise, the following definitions apply in the Montana Code Annotated:

(a) "Female" means a member of the human species who, under normal development, has XX chromosomes and produces or would produce relatively large, relatively immobile gametes, or eggs, during her life cycle and has a reproductive and endocrine system oriented around the production of those gametes. An individual who would otherwise fall within this definition, but for a biological or genetic condition, is female.

(b) "Male" means a member of the human species who, under normal development, has XY chromosomes and produces or would produce small, mobile gametes, or sperm, during his life cycle and has a reproductive and endocrine system oriented around the production of those gametes. An individual who would otherwise fall within this definition, but for a biological or genetic condition, is male.

(c) "Oath" includes an affirmation or declaration.

(d) "Person" includes a corporation or other entity as well as a natural person.

(e) "Several" means two or more.

(f) "Sex" means the organization of the body parts and gametes for reproduction in human beings and other organisms. In human beings, there are exactly two sexes, male and female, with two corresponding types of gametes. The sexes are determined by the biological and genetic indication of male or female, including sex chromosomes, naturally occurring sex chromosomes, gonads, and nonambiguous internal and external genitalia present at birth, without regard to an individual's psychological, behavioral, social, chosen, or subjective experience of gender.

(g) "State", when applied to the different parts of the United States, includes the District of Columbia and the territories.

(h) "United States" includes the District of Columbia and the territories.

(2) Wherever the word "man" or "men" or a word that includes the syllable "man" or "men" in combination with other syllables, such as "workman", appears in this code, the word or syllable includes "woman" or "women" unless the context clearly indicates a contrary intent and unless the subject matter of the statute relates clearly and necessarily to a specific sex only.

(3) Whenever the term "heretofore" occurs in any statute, it must be construed to mean any time previous to the day the statute takes effect. Whenever the word "hereafter" occurs, it must be construed to mean the time after the statute containing the term takes effect.