The GM Debate

The GM Debate ⚖️

You already know HOW a gene is moved into a crop or a bacterium. The harder question is whether we SHOULD. Genetic modification splits opinion, and exam questions on it are marked on whether you can argue both sides properly. This module builds that skill.

The case for GM 👍

Supporters point to real, measurable gains: • **Higher yields**, so more food from the same land. • Crops **resistant to pests, disease or drought**, which can mean **fewer pesticides** sprayed. • **Added nutrients**: golden rice carries **vitamin A** to help prevent deficiency blindness. • **Cheaper, purer medicines**: engineered bacteria make **human insulin** in bulk.

The concerns 👎

Critics raise objections that are just as concrete: • Modified genes could **spread to wild relatives**, affecting **biodiversity**. • GM crops may affect **insects and food webs**, including species that were never the target. • **Long-term health effects** of eating GM food are not yet fully known. • Some object on **ethical** grounds to modifying living things. • GM seed is often **patented and expensive**, so farmers must keep re-buying it.

Match each argument to its example

Arguments against GM

Select ALL THREE statements that are arguments AGAINST genetic modification.

• Modified genes could spread to wild relatives and affect biodiversity
• The long-term health effects of eating GM food are not fully known
• Patented GM seed can be expensive for farmers to keep buying
• GM crops can give higher yields from the same land
• Golden rice was engineered to contain vitamin A
• Engineered bacteria produce human insulin cheaply

Approve the crop?

An interactive activity.

What earns the marks?

An exam question asks you to "evaluate whether GM crops should be grown". What does a top-mark answer need?

• Both sides with specific examples, followed by a conclusion you justify
• A long list of everything wrong with GM
• A long list of everything good about GM
• Both sides described, but no conclusion at all

How to structure it 📐

A reliable structure for an evaluation answer: 1. **One benefit**, with a specific example (golden rice and vitamin A, or insulin). 2. **One risk or concern**, with a specific example (gene flow to wild relatives, patented seed). 3. **Your conclusion**, and the reason you reached it. Specific examples are what separate a strong answer from a vague one.

Write your evaluation

An interactive activity.

Match each term to its meaning

Debate summary

Arguments for GM include higher yields and added nutrients, such as vitamin A in _____ rice. Arguments against include modified genes spreading to _____ relatives, which could affect biodiversity. A good evaluation gives _____ sides with specific examples, and finishes with a justified _____.