Egg and sperm join together. Pollen and seed join together. Offspring have traits of only one parent. Offspring are identical to one parent.
I gave my students this multiple choice question: Which best describes sexual reproduction in all animals?

Only one answer is correct among these 4 choices:
- Egg and sperm join together.
- Pollen and seed join together.
- Offspring have traits of only one parent.
- Offspring are identical to one parent.

Could you tell me which one is correct?

Egg and sperm join together.