Fact 1: Gametes then unite in fertilization and form a diploid zygote.

Fact 2: Syngamy produces a diploid zygote.

Given the two facts above, answer the question "What occurs in gametes?" with the following options: 
- offspring
 - pollen
 - resistance
 - Energy
 - Energy.
 - heat
 - syngamy
 - glucose


 

       syngamy  