Select the wrong statement

Options

A. (a) Human insulin is being commercially produced from a transgenic species of Escherichia coli
B. (b) Genetically modified Bacillus thuringiensis is used as biopesticide on commercial scale
C. (c) Human protein, `alpha`-1-antitrypsin, is used to treat emphysema
D. (d) Bt toxin genes cry IAc control corn borer

Answer

To solve the question of selecting the wrong statement, we will analyze each of the provided statements one by one.

### Step-by-Step Solution:

1. **Statement A**: "Human insulin is being commercially produced from a transgenic species of E. coli."
- **Analysis**: This statement is correct. E. coli is indeed used to produce human insulin through recombinant DNA technology. The A and B chains of insulin are produced separately and then combined.
- **Conclusion**: This statement is **not** the wrong statement.

2. **Statement B**: "Genetically modified Bacillus thuringiensis (Bt) is used as a biopesticide on a commercial scale."
- **Analysis**: This statement is also correct. Bt is widely used in agriculture as a biopesticide to control various insect pests.
- **Conclusion**: This statement is **not** the wrong statement.

3. **Statement C**: "Human protein alpha 1 antitrypsin is used to treat emphysema."
- **Analysis**: This statement is correct. Alpha 1 antitrypsin is a protein that helps protect the lungs, and its deficiency can lead to emphysema, a lung condition.
- **Conclusion**: This statement is **not** the wrong statement.

4. **Statement D**: "Beta toxin genes cryo-1ac control corn borer."
- **Analysis**: This statement is incorrect. The correct gene that controls corn borer is cryo-1ab, not cryo-1ac.
- **Conclusion**: This statement is the **wrong statement**.

### Final Answer:
The wrong statement is **Statement D**: "Beta toxin genes cryo-1ac control corn borer."

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