An example of molecular pharming are all, Except:

Options

A. Introduction of hirudin synthesissing gene in Brassica napus
B. Inroduction of human `alpha` - lactalbumin gene in Rosie
C. Introuction of gene production of a-1 antitrypsin in Tracy
D. Introduction of human growth hormone producing gene in common carp and gold fish

Answer

To solve the question regarding examples of molecular pharming, we will analyze each option provided and determine which one does not fit the criteria of molecular farming.

### Step-by-Step Solution:

1. **Understand Molecular Farming**:
- Molecular farming refers to the production of pharmaceutical substances using genetically modified organisms (GMOs). These organisms are engineered to produce specific biomolecules or drugs that can have medicinal applications.

2. **Analyze Each Option**:
- **Option A**: Introduction of the hirudin synthesizing gene in Brassica napus.
- Brassica napus (rapeseed) has been genetically modified to produce hirudin, which is a medicinal substance. This is an example of molecular farming.

- **Option B**: Introduction of human alpha-lactalbumin gene in rosy.
- The rosy (likely referring to a type of plant or organism) has been modified to produce human alpha-lactalbumin, a protein with nutritional and potential therapeutic benefits. This is also an example of molecular farming.

- **Option C**: Introduction of gene production for A1 antitrypsin in Tracy.
- Tracy (likely referring to a plant or organism) has been genetically modified to produce A1 antitrypsin, a protein that can help in treating certain diseases. This is another valid example of molecular farming.

- **Option D**: Introduction of human growth hormone production gene in common carp and goldfish.
- This option mentions common carp and goldfish, which are not typically associated with molecular farming for pharmaceutical production. There is no significant evidence or examples of using these fish for producing human growth hormone in the context of molecular farming.

3. **Conclusion**:
- Based on the analysis, **Option D** is the correct answer as it does not represent an example of molecular farming.

### Final Answer:
- The correct answer is **Option D**: Introduction of human growth hormone production gene in common carp and goldfish.