1.2 How Genetic Modification Works (Basic Principles)

In this section, students develop a foundational understanding of genetically modified organisms (GMOs), how they are created, and why their impact can be complex. The Explore phase introduces key biological and biotechnological concepts needed to understand genetic modification before engaging in modelling, AR-based analysis, and creative activities later in the unit.

Genetic modification involves identifying a gene with a desired trait and inserting it into another organism. This process typically includes:

Isolating a specific gene from one organism (e.g., Bt toxin gene from bacteria).
Inserting the gene into a vector (often a plasmid).
Transferring the gene into the target organism (e.g., via Agrobacterium or gene gun).
Ensuring the new gene is expressed correctly.

This allows organisms to gain new characteristics, such as resistance to pests, tolerance to herbicides, or the ability to produce useful substances like insulin.