If father has pseudorickets and mother is normal then :-

Options

A. All offsprings will be affected
B. Only male child will be affected
C. Only female child will be affected
D. One male and female child will be affected

Answer

To solve the question regarding the inheritance of pseudo-rickets when the father is affected and the mother is normal, we need to analyze the genetic background of both parents and how it affects their offspring.

### Step-by-Step Solution:

1. **Identify the Genetic Condition**:
- Pseudo-rickets is often linked to a genetic mutation that can be sex-linked, particularly on the X chromosome. Since males have one X and one Y chromosome (XY), they will express the trait if their single X chromosome carries the mutation.

2. **Determine the Genotype of the Parents**:
- The father, who has pseudo-rickets, would have the genotype X^rY (where X^r represents the X chromosome with the pseudo-rickets allele).
- The mother is normal, so her genotype would be XX (assuming she does not carry the allele for pseudo-rickets).

3. **Gamete Formation**:
- The father can produce two types of gametes: X^r and Y.
- The mother can produce one type of gamete: X.

4. **Punnett Square Analysis**:
- Set up a Punnett square to determine the possible genotypes of the offspring.
- The possible combinations from the father's gametes (X^r and Y) and the mother's gametes (X) would be:
- X^r from father and X from mother → Female offspring: X^rX (affected)
- Y from father and X from mother → Male offspring: XY (normal)

5. **Offspring Analysis**:
- From the Punnett square, we can see:
- 50% of the offspring will be female (X^rX) and will be affected by pseudo-rickets.
- 50% of the offspring will be male (XY) and will be normal.

6. **Conclusion**:
- Therefore, if the father has pseudo-rickets and the mother is normal, the offspring will consist of 50% affected females and 50% normal males.

### Final Answer:
Only female children will be affected by pseudo-rickets.

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