Where does the first cleavage division of the zygote take place?

The fusion of a sperm with which of the following results in the formation of a diploid zygote?

What forms the zygote?

Identify the human developmental stage shown below as well as the related right place of its occurrence in a normal pregnant woman,and select the right option for the two,together.

At which stage is the sex of the baby determined?

The region where the sperm enters the egg is called: