Which of the following cannot be related to biotechnology ?

Options

A. Integration of natural science and organisms.
B. Techniques to alter the chemistry of DNA.
C. Introducing undersirable genes into the target organism.
D. Maintenance of sterile ambience to enable the growth of only the desired microbes.

Answer

To determine which of the following options cannot be related to biotechnology, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Option 1: Integration of the natural sciences and organisms**
- Biotechnology involves the integration of various natural sciences such as biology, chemistry, and physics. This integration is essential for understanding and manipulating biological systems. Therefore, this option is related to biotechnology.

2. **Option 2: Techniques to alter the chemistry of DNA**
- Biotechnology includes techniques such as genetic engineering, which involves altering the DNA of organisms. This can include DNA fragmentation, rearrangement, and other modifications. Thus, this option is also related to biotechnology.

3. **Option 3: Introducing undesirable genes into the target organisms**
- The primary goal of biotechnology is to introduce desirable genes that can enhance the traits of organisms, such as improving crop yield or disease resistance. Introducing undesirable genes does not align with the objectives of biotechnology, as it would not be beneficial. Therefore, this option is not related to biotechnology.

4. **Option 4: Maintenance of the sterile ambience and enable the growth of only the desired microbes**
- Maintaining a sterile environment is crucial in biotechnology for the cultivation of specific microorganisms, especially in processes like fermentation and vaccine production. This option is related to biotechnology.

### Conclusion:
After analyzing all the options, the one that cannot be related to biotechnology is **Option 3: Introducing undesirable genes into the target organisms**.

### Final Answer:
**Option 3** is the correct answer.

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