Why does flavr savr tomato possess long shelf life?

Explanation

**Step-by-Step Solution:**

1. **Understanding Flavr Savr Tomato**: The Flavr Savr tomato is a genetically modified organism (GMO), specifically a transgenic tomato. This means that its genetic material has been altered to achieve certain desirable traits.

2. **Identifying the Key Gene**: In Flavr Savr tomatoes, a native gene responsible for producing the enzyme polygalacturonase has been blocked. This gene is crucial for the ripening process of tomatoes.

3. **Role of Polygalacturonase**: Polygalacturonase is an enzyme that breaks down pectin, a substance that helps maintain the firmness of the fruit. When this enzyme is active, it leads to the softening of the tomato as it ripens.

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