Purification and concentration of the substance produced by genetic engineering of done by a process know as :

Options

A. Upstream processing
B. Downstrem processing
C. Elution
D. Both (1) and (2)

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the process involved in the purification and concentration of substances produced by genetic engineering.

2. **Identifying the Options**: The options provided are:
- Option 1: Upstream Processing
- Option 2: Downstream Processing
- Option 3: Elution
- Option 4: Both 1 and 2

3. **Analyzing Upstream Processing**:
- Upstream processing refers to the pre-fermentation stage where the focus is on selecting the right microorganisms and preparing the media for fermentation. This stage does not involve purification or concentration of the product, so it is not the correct answer.

4. **Analyzing Downstream Processing**:
- Downstream processing occurs after fermentation. It involves recovering the product from the culture and media, which includes the purification and concentration of the desired substance. This aligns with the question, making it a strong candidate for the correct answer.

5. **Analyzing Elution**:
- Elution is a specific extraction process used in downstream processing, particularly in techniques like ion exchange chromatography. While it is part of the purification process, it does not encompass the entire process of purification and concentration.

6. **Conclusion**:
- Based on the analysis, the correct answer to the question is **Downstream Processing**, as it directly relates to the purification and concentration of substances produced by genetic engineering.

**Final Answer**: Downstream Processing

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