Insemination – the First Step in Pregnancy After sexual
intercourse or artificial insemination, millions of sperm swim
through the cervix into the uterus and then up into the two
fallopian tubes, which connect each of a woman’s ovaries to her
uterus. When an egg is released by one of the ovaries and is
penetrated by a sperm cell, insemination has taken place and
conception begins. The fertilized egg, now called a zygote, will
have a full set of 46 chromosomes and the ability to become a
whole new human being.