Which of the following characters is/are not related to Down's syndrome?

Options

A. Short stature and small round head
B. Furrowed tongue and partially open mouth
C. Big and wrinkled tongue
D. Gynaecomastia

Answer

### Step-by-Step Solution:

1. **Understanding Down Syndrome**:
- Down syndrome is a genetic disorder caused by the presence of an extra copy of chromosome 21, known as trisomy 21. This condition leads to various physical and intellectual disabilities.

2. **Identifying Common Characteristics of Down Syndrome**:
- Common characteristics associated with Down syndrome include:
- Short stature
- Small round head
- Protruding tongue (often referred to as a "parrot tongue")
- Partially open mouth
- Wrinkled tongue
- Developmental delays and mental retardation

3. **Analyzing the Given Options**:
- The question asks which of the listed characters is not related to Down syndrome.
- The options include:
- Short stature and small round head (related to Down syndrome)
- Protruding tongue and partially open mouth (related to Down syndrome)
- Gynecomastia (not related to Down syndrome)

4. **Identifying the Incorrect Character**:
- Gynecomastia is the development of breast tissue in males and is associated with Klinefelter syndrome, which involves an extra X chromosome (XXY). This condition is not related to Down syndrome.

5. **Conclusion**:
- The character that is not related to Down syndrome is **gynecomastia**.