This process occurs roughly a month and a half after conception, and occurs completely separately from genetic sex.
Genetic sex is determined solely by the presence or absence of the Y chromosome (presence = male, absence = female).
The Talmud discusses it primarily in two places, in Tractate Bikkurim Yevamot conducts a much lengthier analysis, where a variety of different approaches are considered in light of the opinions established in Bikkurim.
In these discussions, the Talmudic personalities delineate four theoretical categories into which the androgynos may fall: Jewish law has specific legal obligation that differ for men and women, and thus gender becomes an exceedingly important aspect of one's identity.
In Jewish tradition, the term androgynos (אנדרוגינוס in Hebrew, translation "intersex") refers to someone who possesses both male and female sexual characteristics.
Due to the ambiguous nature of the individual's sex, Rabbinic literature discusses the gender of the individual and the legal ramifications that result based on potential gender classifications.
According to this classification, in cases where the law differs for men and women, androgynos individuals must adhere to the stricter option.
Nonetheless, legal authorities within Judaism have continued to debate the status of the tumtum in much the same way as they have debated the status of the androgynos.However, according to the opinions who maintain that the individual is fully male, then they would recite the blessing as any other male would.There is a contemporary debate between modern halachik (Jewish Law) decisors surrounding the appropriate course of action for someone who presents both sexual characteristics.As explained above, the Jewish androgynos refers specifically to an individual who outwardly appears to have both male and female genitals.A similar though distinct category exists, called a tumtum (טומטום in Hebrew, meaning "hidden").