What will be the percentage inheritance of a disorder from an X - linked diseases father to his son ?

Options

A. `0%`
B. `25%`
C. `50%`
D. `100%`

Answer

To solve the question regarding the percentage inheritance of an X-linked disorder from a father to his son, we can follow these steps:

### Step-by-Step Solution:

1. **Understand X-linked Inheritance**:
- X-linked diseases are caused by mutations in genes located on the X chromosome.

2. **Identify Chromosomal Contributions**:
- Males have one X and one Y chromosome (XY), while females have two X chromosomes (XX).
- A father contributes his Y chromosome to his son and his X chromosome to his daughter.

3. **Determine the Son's Chromosomal Makeup**:
- Since the son receives the Y chromosome from his father, he does not inherit the X chromosome from him. Instead, he inherits one X chromosome from his mother.

4. **Conclusion on Disease Transmission**:
- Because the son does not receive an X chromosome from his father, he cannot inherit an X-linked disorder from him. Therefore, the percentage inheritance of the disorder from an X-linked disease father to his son is 0%.

5. **Final Answer**:
- The correct answer is 0%.