| | Family Health | Babies Health Who makes the baby man or women? The sex of a baby is determined by the sperm. If the sperm carries an X chromosome, the baby will be female. If the sperm carries a Y chromosome, the baby will be male. Babies Health - Related Articles Did African moors really end the black plague? Signs & Symptoms of Multiple Myeloma What does pimples on the back of upper arm mean? Liquid Vitamins Vs. Pill Vitamins How to Deal With Being Jittery Diastolic Heart Failure Treatment How to Minimize Impedance in Electrical Stimulation