A gene that shows its effect on more than one character is

Options

A. polygene
B. Pleiotropic gene
C. Multifactor gene
D. Multiple gene

Answer

To solve the question "A gene that shows its effect on more than one character is", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking for a specific type of gene that influences multiple traits or characteristics in an organism.

2. **Review the Options**: The options provided are:
- Polygene
- Pleiotropic gene
- Multifactor gene
- Multiple gene

3. **Define Each Option**:
- **Polygene**: This refers to a group of non-allelic genes that collectively influence a single phenotypic trait. They do not individually show effects on multiple traits.
- **Pleiotropic gene**: This type of gene affects more than one phenotypic characteristic. The phenomenon where one gene influences multiple traits is known as pleiotropy.
- **Multifactor gene**: This term is related to multifactorial inheritance, where multiple genetic factors and sometimes environmental factors contribute to a trait. It does not specifically refer to a single gene affecting multiple traits.
- **Multiple gene**: This is another term for polygene, which refers to several genes affecting a single trait rather than multiple traits.

4. **Identify the Correct Answer**: Based on the definitions, the correct answer is **pleiotropic gene** because it is specifically defined as a gene that shows its effect on more than one character.

5. **Conclusion**: The answer to the question is **pleiotropic gene**.

### Final Answer:
A gene that shows its effect on more than one character is a **pleiotropic gene**.

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