Sex Binary as Biological Anchor

Define 'female' and 'male' across policy and law using a cross‑species, reproductive criterion (egg‑producer vs sperm‑producer during reproductive phase). This definition is proposed as a stable anchor that acknowledges biological exceptions (intersex, hermaphroditism, within‑sex variation) without dissolving categorical sex for medical, legal, and institutional purposes. — If adopted as an organizing definitional principle, it would simplify and harden the basis for statutes, medical protocols, sports eligibility rules, and data collection while forcing clearer treatment of edge cases in policy and litigation.