Which statement best defines fertilization?
a. a fertilized egg that has begun cell division
b. the joining of an egg and a sperm
c. the period of about 40 weeks when a developing embryo or fetus is in the uterus
d. the process by which the uterus contracts to push the fetus out of the woman's body through the vagina

Fertilization is the union of a human egg and sperm. During fertilization between two gametes a zygote , which is a eukaryotic cell is formed. The following statement best describes fertilizitaion: The joining of an egg and a sperm. Correct B It is the fusion of haploid gametes, egg and sperm, to form the diploid zygote.