You are presented with the quiz "What is a diploid zygote the result of?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "gametes then unite in fertilization and form a diploid zygote" and "gametes are haploid egg or sperm that fuse to form a zygote". 

So, what's the best answer to the question?


 

      haploid sperm and egg     