title: Fetal sex ratio in the rhesus (Macaca mulatta).
abstract: Fetal sex ratio was determined in several hundred timed Macaca mulatta pregnancies terminated by hysterotomy between 75 and 179 days' gestation. From 75 to 149 days' gestation a greater number of females occurred in utero, while after 150 days a greater number of males was observed. However, this difference was not statistically significant.
mesh_terms: D000818:Animals; D005260:Female; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D000882:Haplorhini; D008251:Macaca / Q000502:physiology*; D008253:Macaca mulatta / Q000502:physiology*; D008297:Male; D011247:Pregnancy; D012744:Sex Ratio