Males, Females Conceived In Equal Numbers.

research published in the Proceedings of the National Academy of Sciences suggests that “when sperm meets egg, the two sexes are conceived in equal numbers.” Investigators came to this conclusion after looking at “data on nearly 140,000 embryos that had been routinely screened at fertility clinics in the United States and elsewhere for genetic problems.” http://www.npr.org/blogs/health/2015/03/30/396384911/why-are-more-baby-boys-born-than-girls