Which one of the following technique is used to produce the GM crops ?

Options

A. Micropropogation
B. Somatic hybridization
C. r-DNA technology
D. Cross breeding

Answer

To answer the question "Which one of the following techniques is used to produce GM crops?", we will analyze the provided options: micropropagation, somatic hybridization, and DNA technology (rDNA technology).

### Step-by-Step Solution:

1. **Understanding Micropropagation**:
- Micropropagation is a clonal propagation technique where identical plants are generated from a single parent plant.
- It involves taking an apical meristem and culturing it in a nutrient medium to produce multiple copies of the same plant.
- **Conclusion**: This technique does not involve genetic modification; it simply produces clones.

2. **Understanding Somatic Hybridization**:
- Somatic hybridization allows for the fusion of protoplasts (the living part of a plant cell) from two different species.
- This technique helps to overcome species barriers and can create hybrid organisms.
- **Conclusion**: While it can create hybrids, it is not the primary method used for genetic modification of crops.

3. **Understanding DNA Technology (rDNA Technology)**:
- Recombinant DNA technology (rDNA technology) involves the manipulation of DNA to introduce specific genes from one organism into another.
- This technique is crucial for producing genetically modified (GM) crops, as it allows for the incorporation of desirable traits, such as pest resistance or enhanced nutritional content.
- **Examples**: BT cotton and golden rice are products of rDNA technology.
- **Conclusion**: This is the primary technique used for producing GM crops.

4. **Understanding Crossbreeding**:
- Crossbreeding involves mating two different breeds or species to produce offspring.
- While it can lead to new traits, it does not involve direct manipulation of DNA at the molecular level like rDNA technology does.
- **Conclusion**: This method is traditional and does not produce GM crops.

### Final Answer:
The correct technique used to produce GM crops is **DNA technology (rDNA technology)**.

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