Protein products of Bt genes cry IAc and cry II Ab control

Options

A. Bollworm
B. Roundworm
C. Moth
D. Fruit fly

Answer

**Step-by-Step Solution:**

1. **Understanding Bt Genes**: The question refers to the protein products of Bt genes, specifically cry IAc and cry IIAb. These genes are derived from the bacterium *Bacillus thuringiensis* (Bt).

2. **Identifying the Cry Proteins**: The cry genes produce proteins that are toxic to certain pests. The specific proteins in question are cry IAc and cry IIAb.

3. **Target Pests**:
- Cry IAc primarily targets the larvae of moths and certain other insects.
- Cry IIAb also targets similar pests, including some species of moths and potentially other insects.

4. **Specific Control**:
- Both cry IAc and cry IIAb are known to control pests such as the corn borer and various types of caterpillars, including the fall armyworm.

5. **Conclusion**: The protein products of the Bt genes cry IAc and cry IIAb primarily control the larvae of moths and specific types of worms, particularly the corn borer and other related pests.

**Final Answer**: The protein products of Bt genes cry IAc and cry IIAb control the larvae of moths and worms, specifically targeting pests like the corn borer.

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