Pattern baldness moustaches and beard in humans males are examples of

Options

A. Sex - determining traits
B. Sex linked traits
C. Sex limited traits
D. Sex differentiating traits

Answer

To solve the question regarding pattern baldness, moustaches, and beards in human males, we need to analyze the given options and understand the definitions of each term.

### Step-by-Step Solution:

1. **Understanding the Traits**:
- The traits in question are pattern baldness, moustaches, and beards. These traits are typically observed in males and are not present or expressed in females.

2. **Analyzing the Options**:
- **A. Sex Determining Traits**: These traits determine the sex of an individual but do not specifically refer to traits that are only visible in one sex.
- **B. Sex Linked Traits**: These traits are associated with genes located on sex chromosomes (X or Y chromosomes) but may not necessarily be limited to one sex.
- **C. Sex Limited Traits**: These traits are expressed in one sex only, even though the genes for these traits may be present in both sexes. This aligns with our traits since they are expressed only in males.
- **D. Sex Differentiating Traits**: This term is not commonly used in genetics and does not specifically refer to traits limited to one sex.

3. **Conclusion**:
- Since pattern baldness, moustaches, and beards are traits that are expressed only in males, they are classified as **sex limited traits**. Therefore, the correct answer is **C. Sex Limited Traits**.

### Final Answer:
C. Sex Limited Traits