Mutations used in agriculture are commonly

Options

A. spontaneous
B. lethal
C. induced
D. recessive and lethal

Answer

To answer the question regarding the types of mutations commonly used in agriculture, we can break down the information provided in the video transcript step by step.

### Step-by-Step Solution:

1. **Understanding Mutations**:
- Mutations are changes in the DNA sequence of an organism. They can occur spontaneously or can be induced through various methods.

2. **Types of Mutations**:
- **Spontaneous Mutations**: These occur naturally without any external influence. They can arise from errors during DNA replication or from environmental factors.
- **Induced Mutations**: These are mutations that are deliberately caused by external agents, such as chemicals or radiation, to achieve desired traits in plants or animals.
- **Lethal Mutations**: These mutations result in the death of the organism or prevent it from reproducing. While they are not commonly used in agriculture, understanding them is essential.
- **Precise Mutations**: This term likely refers to targeted mutations that are made with high specificity, often using techniques like CRISPR-Cas9.

3. **Application in Agriculture**:
- In agriculture, induced mutations are commonly used to develop new varieties of crops that have desirable traits, such as increased yield, disease resistance, or improved nutritional content.

4. **Conclusion**:
- Therefore, the types of mutations commonly used in agriculture are primarily **induced mutations**, along with an understanding of spontaneous mutations and the implications of lethal mutations.

### Final Answer:
Mutations used in agriculture are commonly **induced mutations**, along with **spontaneous mutations**. Lethal mutations are generally not used due to their harmful effects, while precise mutations refer to targeted genetic modifications.