Does Sperm Make a Baby

Pregnancy occurs after ejaculation when sperm from the semen travels through the cervix into the uterus. When a mature sperm joins with an egg, fertilization occurs and an embryo is created. The embryo then implants itself in the uterine lining, resulting in pregnancy.

Does a baby come from the egg or sperm?

The combined sperm and egg is called a zygote. The zygote contains all of the genetic information (DNA) needed to become a baby. Half the DNA comes from the mother’s egg and half from the father’s sperm.

How long does it take for sperm to make a baby?

Pregnancy doesn’t start the day you have sex — it can take up to six days after sex for the sperm and egg to join and form a fertilized egg. Then, it can take three to four days for the fertilized egg to completely implant itself in the lining of the uterus.