What is formed by the fusion of male and female gametes?

Cleavage is followed by which stage?

When the cleavage furrow extends from the animal pole to the vegetal pole and does not bisect the egg equally into two blastomeres,the plane of cleavage is:

Which of the following secretes fertilizin?

Where does the formation of the zygote occur during fertilization in rabbits?

Which lytic enzyme present in the sperm helps in penetrating the corona radiata during fertilization?