Growing a whole plant from a single cell. Finding the sequences of bases in plant DNA. Inserting a gene into plants that makes them resistant to insects. Attaching the root of one type of plant to the stem of another type of plant.
I gave my students this multiple choice question: Which of the following is an example of genetic engineering?

Only one answer is correct among these 4 choices:
- Growing a whole plant from a single cell.
- Finding the sequences of bases in plant DNA.
- Inserting a gene into plants that makes them resistant to insects.
- Attaching the root of one type of plant to the stem of another type of plant.

Could you tell me which one is correct?

Inserting a gene into plants that makes them resistant to insects.