For women who have an (average) 28-day cycle, ovulation generally happens around day 14 from the first day of her last normal menstrual period.
Girl sperm tend to be a bit more resilient and can hang around in the woman’s reproductive tract for longer.įor any couple, their chances of having a baby of either gender are vastly increased by having lots of sex during the woman’s most fertile period. Many of the theories around gender selection rest on the fact that the male, or Y sperm, swim more slowly than the X, or girl sperm. Right from the moment of conception the baby’s gender is formed. The sex of the baby is allocated to one of these pairs, in chromosomes numbered 45 and 46, “the sex chromosomes”. How is a boy or girl made?Įach parent contributes 23 chromosomes to the embryo - a total of 46 or 23 pairs make every new little human. But if we’re going to be absolutely, statistically precise, boys are more commonly conceived than girls. Every time a baby is conceived, the odds of it being a boy or a girl are around 50:50. Just remember, the information here is just a guide, a bit of fun. We can't offer any guarantees, but hey, there's no harm in trying!Īre you desperate for a boy or a girl baby? Or don’t really care either way? For all sorts of reasons couples may have a preference for one gender and try to do what they can to sway the odds in their preferred direction.