Sperms are deposited at the posterior vault of vagina from where that start their journey towards Answers.com
. On the way, they have to cross cervix and Answers.com before reaching near to egg. Al sperms can not reach to fallopian tube. A good quality of ejaculate contains 25-30% fast moving sperms. These fast moving sperms can reach near egg within 15-20 minutes. If ejaculate contains less percentage of fast moving sperms then more time is needed that can be up to few hours. Once sperms reach near egg, they start to secrete Answers.com that dissolve the egg shell and then one sperm can unite with egg to cause pregnancy.
When a sperm and egg join, they create a fertilized egg known as a zygote.
fertilization
Baby is formed
a zygote
all living cells, except sperm and egg cells until they join. Also some cells take a very long while to divide
A zygote.
Fertilization.
zygote
a zygote
embryo
No
fertilization