Polygenic traits include

Options

A. skin colour and height in human beings
B. kernel colour in wheat
C. cob size of maize
D. all of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Polygenic Traits**:
- Polygenic traits are characteristics that are influenced by multiple genes. The prefix "poly-" means many, while "genic" refers to genes.

2. **Examples of Polygenic Traits**:
- In humans, traits such as skin color and height are controlled by multiple genes. This means that rather than being determined by a single gene, these traits are the result of the interaction of several genes.

3. **Kernel Color in Wheat**:
- The kernel color in wheat is another example of a polygenic trait. It is determined by the interaction of multiple genes, where different alleles can produce different colors, such as red (dominant) and white (recessive).

4. **Crop Size in Maize**:
- Similarly, the crop size of maize is also influenced by multiple genes, making it a polygenic trait as well.

5. **Conclusion**:
- Since all the mentioned traits (skin color, height in humans, kernel color in wheat, and crop size in maize) are influenced by more than two genes, they all qualify as polygenic traits. Therefore, the correct answer is "all of the above".

**Final Answer**: Polygenic traits include skin color and height in human beings, kernel color in wheat, crop size of maize, and all of the above.

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