Applications of Biotechnology — Class 12 Bio-Zoology (Samacheer Kalvi)
TN State Board (Samacheer Kalvi) Class 12 Bio-Zoology, Chapter 9. Transgenic organisms, gene therapy, CRISPR and bioethics.
1. About this chapter
This chapter covers Applications of Biotechnology as part of the Class 12 Samacheer Kalvi Bio-Zoology curriculum. It deals with transgenic organisms, gene therapy, crispr and bioethics and builds conceptual understanding essential for the TN HSC Public Exam.
By the end of this chapter, students will be able to:
- Describe transgenic plants and animals
- Explain gene therapy and CRISPR-Cas9
2. Key concepts
- Concept 1: Describe transgenic plants and animals.
- Concept 2: Explain gene therapy and CRISPR-Cas9.
3. Important terms and formulas
| Term / Formula | Description |
|---|---|
| Describe transgenic plants and… | Describe transgenic plants and animals |
| Explain gene therapy and… | Explain gene therapy and CRISPR-Cas9 |
4. Worked examples
Example 1. Applying a key concept from this chapter.
Solution: Identify the relevant principle → apply the formula or rule → state the answer with correct units.
Example 2. A typical exam-style question on applications of biotechnology.
Solution: Break the problem into steps, use the appropriate formula and verify the answer.
5. Common mistakes
- Mistake: Skipping units or forgetting to state them. Fix: Always write units alongside every quantity and answer.
- Mistake: Confusing similar terms or concepts in this chapter. Fix: Make a comparison table of the terms during revision.
6. Practice (exam-style)
- Define the main term or principle covered in Chapter 9.
- Give two real-life examples related to applications of biotechnology.
- Solve a short numerical or descriptive question from this chapter.
- State one important formula and explain each symbol.
7. Answer key (hints)
- Refer to section 2 (Key concepts) above for the definition.
- Examples should be drawn from daily experience and local context.
- Apply the formula from section 3, show all steps clearly.
- Formula with units — refer to the textbook glossary for symbol meanings.
8. Quick revision
- Class 12 Bio-Zoology — Chapter 9: Applications of Biotechnology.
- Core idea: Transgenic organisms, gene therapy, CRISPR and bioethics.
- Key outcomes: Describe transgenic plants and animals; Explain gene therapy and CRISPR-Cas9.
- Always revise diagrams / tables from the Samacheer Kalvi textbook before the exam.
