---
type: "Chapter"
knowledge_type: "chapter"
entity_type: "chapter"
id: "66def64b3f8b4e9e69bd7941"
title: "Applications of Recombinant DNA Technology"
board: "CBSE"
curriculum: "CBSE"
class: "Class 12"
subject: "Biotechnology"
book: "Biotechnology"
chapter: "Applications of Recombinant DNA Technology"
chapter_slug: "applications-of-recombinant-dna-technology"
canonical_url: "https://www.edzy.ai/cbse-class-12-biotechnology-applications-of-recombinant-dna-technology"
markdown_url: "https://www.edzy.ai/okf/chapter/cbse-class-12-biotechnology-applications-of-recombinant-dna-technology.md"
source_type: "examSubjectBookChapter"
source_id: "66def64b3f8b4e9e69bd7941"
source_pdf: "https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/8e9d047a-8f5b-48c6-8259-ce3b4aa8416a.pdf"
source: "Edzy"
version: 1
last_updated: "2026-06-20"
---

# Applications of Recombinant DNA Technology

Recombinant DNA (rDNA) technology has revolutionized our life in various ways. In recent years, breakthrough discoveries have provided solutions to many of the problems. These include establishing the identity of an individual, introduction of foreign genes into other organisms, diagnosis of many diseases and their treatment, production of therapeutic agents/molecules, and so on. In this chapter, students will be acquainted with a few applications of rDNA technology, such as DNA fingerprinting, developing transgenic organisms, gene therapy, recombinant vaccines, and production of therapeutic agents/molecules.

---

## Knowledge Snapshot

| Field | Details |
| :--- | :--- |
| Class | Class 12 |
| Subject | Biotechnology |
| Book | Biotechnology |
| Chapter | Applications of Recombinant DNA Technology |
| Pages | 67-110 |

---

## Chapter Summary

### Short Summary
This chapter discusses the applications of recombinant DNA technology, highlighting its role in DNA fingerprinting, creation of transgenic organisms, gene therapy, development of recombinant vaccines, and production of therapeutic agents/molecules.

### Detailed Summary
Recombinant DNA technology has transformed numerous fields by providing essential solutions to various problems, including establishing individual identities and introducing foreign genes into organisms. DNA fingerprinting, developed by Sir Alec Jeffreys in 1984, utilizes variations in DNA sequences to identify individuals. The chapter explains the human genome's composition, the significance of variable number tandem repeats (VNTRs) in DNA fingerprinting, and details the process of restriction fragment length polymorphism (RFLP). Applications of DNA fingerprinting in paternity testing, forensic identification, evolutionary studies, and genetic analysis of disorders are also discussed.

---

## Topic-Wise Explanation

### DNA Fingerprinting
DNA fingerprinting is a technique that uses variations in non-coding regions of DNA to identify individuals. The method capitalizes on short tandem repeats (VNTRs), which show significant polymorphism. The chapter details the DNA fingerprinting process, including DNA isolation, restriction enzyme digestion, gel electrophoresis, and Southern hybridization. It also highlights practical applications, such as paternity testing and forensic identification.

---

## Core Ideas

| Idea | Explanation |
| :--- | :--- |
| rDNA Technology | A method to manipulate genes for various applications including medical and agricultural benefits. |
| VNTR | Variable number tandem repeat regions in DNA used for individual identification in forensic science. |

---

## Key Concepts

| Concept | Meaning |
| :--- | :--- |
| DNA | The molecule that carries genetic information in living organisms. |
| PCR | Polymerase Chain Reaction, a method used to amplify DNA segments for analysis. |

---

## Important Points for Revision

* Recombinant DNA technology has significant applications in establishing individual identities and introducing foreign genes.
* DNA fingerprinting was developed by Sir Alec Jeffreys in 1984 and utilizes VNTRs.
* More than 90% of the genome consists of non-coding regions that contain repetitive DNA sequences.
* VNTRs can be subdivided into microsatellites and minisatellites.
* DNA fingerprinting processes include DNA isolation, digestion, electrophoresis, and hybridization.
* Applications include paternity testing, forensic identification, evolutionary studies, and genetic disorder analysis.
* PCR is often employed to enhance the sensitivity of DNA fingerprinting.

---

## Practice Questions

### Short Answer Questions

1. What is the significance of DNA fingerprinting in forensic science?
2. Who developed the DNA fingerprinting technique and when?
3. Explain the role of VNTRs in DNA fingerprinting.
4. Describe the steps involved in the DNA fingerprinting process.
5. How is PCR utilized in DNA fingerprinting?

### Long Answer Questions

1. Discuss the applications of recombinant DNA technology in medicine and agriculture.
2. Explain the technique of DNA fingerprinting in detail, including its applications in paternity testing and criminal justice.
3. Analyze the importance of VNTRs and their role in determining genetic relationships among individuals.

---

## Source Attribution

| Field | Value |
| :--- | :--- |
| Source | Edzy |
| Reference Type | examSubjectBookChapter |
| Reference ID | 66def64b3f8b4e9e69bd7941 |
| Canonical URL | https://www.edzy.ai/cbse-class-12-biotechnology-applications-of-recombinant-dna-technology |
| Markdown URL | https://www.edzy.ai/okf/chapter/cbse-class-12-biotechnology-applications-of-recombinant-dna-technology.md |