Emily's New Sister - Just for Kids - Understanding Pregnancy

Will The Baby Be A Boy Or A Girl?

To make a baby, a man's sperm meets and joins with a woman's egg cell inside her body. Inside the man's sperm are a set of instructions that tell the baby to be a boy or a girl. The instructions in the man's sperm cell can either carry the letter X or the letter Y. If the letter is an X, it means the baby will be a girl. If the letter is a Y, the baby will be a boy.

Will The Baby Be A Boy Or A Girl?

Review Date: 7/4/2019

Reviewed By: John D. Jacobson, MD, Professor of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda Center for Fertility, Loma Linda, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. © 1997- A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.