Hypertrichosis is :-

Options

A. Holandric character
B. X-Linked character
C. Diagenic character
D. Sex-influened character

Answer

### Step-by-Step Solution:

1. **Understanding Hypertrichosis**:
- Hypertrichosis, also known as Ambrose syndrome, is characterized by an abnormal amount of hair growth on the body. It can manifest as excessive hair growth, leading to informal references such as "werewolf syndrome."

2. **Types of Hypertrichosis**:
- There are two main types of hypertrichosis:
- **Generalized Hypertrichosis**: This type affects the entire body.
- **Localized Hypertrichosis**: This type is restricted to specific areas of the body.

3. **Congenital vs. Acquired**:
- Hypertrichosis can be either congenital (present at birth) or acquired (developing later in life).

4. **Inheritance Pattern**:
- The inheritance of hypertrichosis is linked to the Y chromosome, which is a sex chromosome found only in males. This means that hypertrichosis primarily affects males.

5. **Correct Classification**:
- Given that hypertrichosis is linked to the Y chromosome, it is classified as a **hollandric trait**. Hollandric traits are those that are inherited through genes located on the Y chromosome.

6. **Elimination of Other Options**:
- It is not an X-linked trait (which would be inherited through the X chromosome).
- It is not a diagenic trait (which would involve two genes).
- It is not a sex-influenced trait (which would involve traits that can be expressed in both sexes but are influenced by sex hormones).

7. **Conclusion**:
- Therefore, the correct classification of hypertrichosis is as a **hollandric corrector**.