The bundled zigo.json coefficients are adapted from Zigo, "Sex Checking by
Zygosity Distributions", by Oscar Molina-Sedano, Daniel Mas Montserrat, and
Alexander G. Ioannidis.

Zigo source: https://github.com/AI-sandbox/zigo
Paper DOI: https://doi.org/10.64898/2026.03.15.711924
Original license: Apache License 2.0
