Myotonic dystrophy is an example of :-

Options

A. Autosomal recessive trait
B. Autosomal dominant trait
C. Sex linked recessive trait
D. Sex linked dominant trait

Answer

To determine the correct classification of myotonic dystrophy, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Myotonic Dystrophy**:
- Myotonic dystrophy is a genetic disorder that affects muscle function, leading to progressive muscle wasting and weakness. It is classified under muscular dystrophies.

2. **Identifying the Inheritance Pattern**:
- Myotonic dystrophy is inherited, which means it is passed down from parents to offspring. This suggests that it has a genetic basis.

3. **Types of Myotonic Dystrophy**:
- There are two main types of myotonic dystrophy: Type 1 and Type 2. Both types are inherited in a specific manner.

4. **Inheritance Classification**:
- The inheritance of myotonic dystrophy is categorized as an autosomal dominant trait. This means that only one copy of the mutated gene from either parent is sufficient to cause the disorder.

5. **Conclusion**:
- Based on the information that myotonic dystrophy is inherited in an autosomal dominant manner, we conclude that the correct answer to the question is: **Autosomal Dominant Trait** (Option 2).

### Final Answer:
Myotonic dystrophy is an example of an **Autosomal Dominant Trait**.

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