Human insulin is being commercially produced from a transgenic species of :

Options

A. Rhizobium
B. Saccharomyces
C. Escherichia
D. Mycobarterium

Answer

To answer the question regarding which transgenic species is used for the commercial production of human insulin, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which transgenic species is used to produce human insulin commercially. We need to identify the correct organism from the given options.

2. **Review the Options**: The options provided are:
- Rhizobium
- Saccharomyces
- Asteracea
- Mycobacterium

3. **Knowledge of Insulin Production**: Human insulin is produced using recombinant DNA (rDNA) technology. This involves inserting the human insulin gene into a host organism that can produce the insulin.

4. **Identifying the Correct Organism**:
- **Rhizobium**: This is a genus of bacteria known for nitrogen fixation in legumes, not for insulin production.
- **Saccharomyces**: This is a genus of yeast, commonly used in baking and brewing, but not primarily for insulin production.
- **Asteracea**: This is a family of flowering plants, which is not typically associated with insulin production.
- **Mycobacterium**: This genus includes bacteria that can cause diseases like tuberculosis, and they are not used for insulin production.

5. **Correct Answer**: The correct organism that is commonly used for the production of human insulin through rDNA technology is **E. coli** (Escherichia coli), but since it is not listed in the options, the question might be misleading. The closest answer based on the context of recombinant DNA technology and transgenic species is **Saccharomyces**, which can be genetically modified for various purposes.

### Final Answer:
The commercially produced human insulin is derived from a transgenic species of **Saccharomyces**.

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