+https://link.springer.com/article/10.1007/s10508-021-01989-8
+
+Degree of religiousness is genetic, but the specific religion is environmental—
+Koenig, L. B., McGue, M., Krueger, R. F., & Bouchard, T. J., Jr. (2005). Genetic and environmentalinfluences on religiousness: Findings for retrospective and current religiousness ratings.Journal ofPersonality,73(2), 471–88. doi:10.1111/j.1467-6494.2005.00316.x.