A female is hemophilic because the mother of the female is

Options

A. Carrier and father should be normal
B. Carrier and father should be haemophilic
C. Haemophilic and father should be normal
D. Normal and father should be normal

Answer

To solve the question "A female is hemophilic because the mother of the female is...", we need to understand the genetics behind hemophilia, which is an X-linked recessive disorder.

### Step-by-Step Solution:

1. **Understand Hemophilia**: Hemophilia is a genetic disorder that affects the blood's ability to clot. It is caused by mutations in genes located on the X chromosome. Since it is X-linked, the inheritance pattern is crucial for understanding how a female can be hemophilic.

2. **Genotype of a Hemophilic Female**: A hemophilic female has two X chromosomes, both of which carry the hemophilia allele (XhXh), where 'Xh' represents the X chromosome with the hemophilia allele.

3. **Inheritance from Parents**:
- A female inherits one X chromosome from her mother and one X chromosome from her father.
- For a female to be hemophilic (XhXh), she must inherit one affected X chromosome from her father and one affected or carrier X chromosome from her mother.

4. **Mother's Genotype**: The mother can either be:
- A carrier (XhX) – she has one normal X chromosome and one hemophilia allele.
- Hemophilic (XhXh) – she has two hemophilia alleles.

5. **Father's Genotype**: The father must be hemophilic (XhY) because he can only pass on the Y chromosome to his sons and the Xh chromosome to his daughters. If he were normal (XY), he would not pass on the hemophilia allele.

6. **Conclusion**: Therefore, for a female to be hemophilic, her mother must be either a carrier or hemophilic, and her father must be hemophilic. The correct answer to the question is that the mother of the female is either a carrier or hemophilic.

### Final Answer:
The mother of the female is either a carrier (XhX) or hemophilic (XhXh), but the father must be hemophilic (XhY).