Grasshopper is an example of

Options

A. XY type of sex-determination
B. XO type of sex-determination
C. Environmental sex determination
D. Genie Sex balance theory

Answer

To solve the question "Grasshopper is an example of," we will analyze the options given and determine the correct type of sex determination for grasshoppers.

### Step-by-Step Solution:

1. **Understand the Types of Sex Determination**:
- The question provides four types of sex determination:
- XY type
- XO type
- Environmental sex determination
- Genetic sex balance theory

2. **Identify the Correct Type for Grasshoppers**:
- Grasshoppers exhibit the XO type of sex determination. In this system, females have two X chromosomes (XX), while males have only one X chromosome (XO). This means that males do not have a second sex chromosome.

3. **Review Other Options**:
- **XY type of sex determination**: This is found in humans and many other mammals, where males have XY chromosomes.
- **Environmental sex determination**: This occurs in some reptiles where the environment influences the sex of the offspring.
- **Genetic sex balance theory**: This is seen in Drosophila (fruit flies), where the ratio of X chromosomes to autosomes determines sex.

4. **Conclusion**:
- Based on the information, the correct answer is that grasshoppers are an example of the XO type of sex determination.

### Final Answer:
Grasshopper is an example of **XO type of sex determination**.

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