title: Amendments to hypotheses on the proximate causes of variation in human sex ratios at birth with parental infection with hepatitis B virus or Toxoplasma gondii.
abstract: In a recent paper in this Journal, I offered hypotheses on the offspring sex ratios of women infected with the parasite Toxoplasma gondii, and on the offspring sex ratios of people who are carriers of hepatitis B virus (HBV) (James, 2008). Subsequent research suggests that these hypotheses need amending. A detailed account of the amendments is given elsewhere in a specialized journal (James, 2010a). Here they are summarized.
authors.affiliation: The Galton Laboratory, Department of Genetics, Evolution and Environment, University College London, UK.
authors.forename: William H
authors.initials: WH
authors.lastname: James
mesh_terms: D002353:Carrier State / Q000503:physiopathology; D005260:Female; D006509:Hepatitis B / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008954:Models, Biological; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000503:physiopathology*; D012744:Sex Ratio; D014123:Toxoplasmosis / Q000503:physiopathology*