A : Turner's syndrome generally does not occur in males.
R : Foetus with 44 + YO complement generally dies.

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

To solve the question regarding Turner's syndrome and the associated statements, we can break it down into a step-by-step analysis.

### Step-by-Step Solution:

1. **Understanding Turner's Syndrome**:
- Turner's syndrome is a genetic disorder that occurs in females when one of the X chromosomes is missing or partially missing. This results in a total of 45 chromosomes (44 autosomes + 1 X chromosome, denoted as 45,X or 44 + X0).

2. **Assertion Analysis**:
- The assertion states: "Turner's syndrome generally does not occur in males."
- This statement is **true** because Turner's syndrome is specifically a condition that affects females due to the absence of one X chromosome. Males have one X and one Y chromosome (XY), and thus cannot have Turner's syndrome.

3. **Reason Analysis**:
- The reason states: "Fetus with 44 + YO complement generally dies."
- This statement is **false**. A fetus with a 44 + Y0 complement (meaning it has 44 autosomes and no X chromosome) cannot survive because it lacks the necessary genetic material for development. However, the correct notation for Turner's syndrome is 44 + X0, not Y0. A Y chromosome without an accompanying X chromosome cannot support fetal development.

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

### Final Answer:
- The correct option is: **Assertion is true, Reason is false.**