Question

multiple cholce question
which of the following occurs during fertilization?
o mitosis is completed
o pronuclei unite to complete fertilization
o the two polar bodies fuse to produce the zygote
o multiple sperm cells enter into the ovum cytoplasm

Explanation:

• Mitosis is a type of cell division that occurs in somatic cells and is not directly related to fertilization.
• During fertilization, the sperm and egg pronuclei unite to form a diploid zygote, which is the completion of fertilization.
• Polar bodies are by - products of oogenesis and do not fuse to form a zygote.
• Normally, only one sperm cell enters the ovum cytoplasm to prevent polyspermy.

Answer:

Pronuclei unite to complete fertilization.