An example of the quantitative trait in man is

Options

A. Hair colour
B. Colour of eye
C. Skin colour
D. Shape of nose

Answer

### Step-by-Step Solution:

1. **Understanding Quantitative Traits**:
- Quantitative traits are characteristics that can be measured and show continuous variation. They do not fall into discrete categories but rather exist on a spectrum.
- Examples of quantitative traits include height, weight, blood pressure, and skin color.

2. **Analyzing the Options**:
- The question provides four options: hair color, color of eyes, skin color, and shape of nose.
- We need to evaluate which of these traits can be classified as a quantitative trait.

3. **Evaluating Each Option**:
- **Hair Color**: Generally categorized into distinct colors (blonde, brown, black, etc.), which does not show continuous variation.
- **Color of Eyes**: Similar to hair color, eye color is also categorized into distinct groups (blue, green, brown, etc.) and does not exhibit continuous variation.
- **Skin Color**: This trait shows a range of shades and is influenced by multiple genes, making it a quantitative trait.
- **Shape of Nose**: While there may be variations, it is typically categorized into specific shapes and does not show continuous variation like skin color.

4. **Conclusion**:
- Among the given options, skin color is the only trait that demonstrates continuous variation and is influenced by multiple genes, making it a clear example of a quantitative trait.

### Final Answer:
The correct answer is **skin color**.

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