Assertion :- The family pedigree of Queen Victoria shows a number of haempphilic descendent as she was a carrier of the disease.
Reason :- Haempphilia is a sex linked dominant disease which shows its transmission from unaffected carrier female to some of the male progeny

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is Flase.
D. If both Assertion & Reason are false.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that Queen Victoria's family pedigree shows a number of hemophilic descendants because she was a carrier of the disease.
- This is true. Queen Victoria was indeed a carrier of hemophilia, which she passed on to some of her descendants, particularly her male offspring.

2. **Understanding the Reason**:
- The reason provided claims that hemophilia is a sex-linked dominant disease.
- This is false. Hemophilia is actually a sex-linked recessive disease, which means that it is carried on the X chromosome and primarily affects males.

3. **Analyzing the Genetics**:
- In females (XX), if one X chromosome carries the hemophilia gene, they can be carriers without expressing the disease because they have a second normal X chromosome.
- In males (XY), having one X chromosome with the hemophilia gene will result in the expression of the disease since they do not have a second X chromosome to mask the recessive allele.

4. **Conclusion**:
- The assertion is true because Queen Victoria did have hemophilic descendants as she was a carrier.
- The reason is false because hemophilia is a sex-linked recessive disease, not dominant.
- Therefore, the correct answer is that the assertion is true, but the reason is false.

### Final Answer:
- The assertion is true, and the reason is false.