A : Holandric traits are passed from one generation to the next generation.
R : These traits appear more frequently in one sex than in other.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true and the reason is not the correct explanation of the assertion , then mark (2)
C. If Assertion is true statement but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

### Step-by-Step Solution:

1. **Understanding Holandric Traits**:
- Holandric traits are those that are associated with the Y chromosome. This means they are only passed from father to son, as only males possess a Y chromosome (XY), while females have two X chromosomes (XX).

2. **Assertion Analysis**:
- The assertion states that "Holandric traits are passed from one generation to the next generation." This is true because these traits can indeed be inherited from father to son.

3. **Reason Analysis**:
- The reason states that "These traits appear more frequently in one sex than in the other." This is misleading because holandric traits are not present in females at all; they are exclusive to males. Therefore, the statement about frequency is incorrect.

4. **Conclusion**:
- Since the assertion is true and the reason is false, the correct relationship is that the assertion is true, but the reason is false.

5. **Final Answer**:
- The correct option is that the assertion is true and the reason is false.