A coloured man `(X^(c)Y)` marries a woman who is carrier for haemophilia `(XX^(h))`. Which of the following is true for their progenies ?

Options

A. `25 %` female progenies carry the genes foe both haemophilia and colourblindness
B. `25 %` male progenies carry only the gene for haemophilia
C. `25 %` female progenies carry only the gene for colourblindness
D. all of these

Explanation

To solve the question regarding the progenies of a colored man (X^cY) and a woman who is a carrier for hemophilia (XX^h), we will follow these steps:

### Step 1: Identify the Genotypes
- The colored man has the genotype X^cY (where X^c represents the allele for colorblindness).
- The woman is a carrier for hemophilia, so her genotype is XX^h (where X^h represents the allele for hemophilia).

### Step 2: Determine Gametes
- The man can produce two types of gametes: X^c and Y.
- The woman can produce two types of gametes: X and X^h.

### Step 3: Create a Punnett Square
- Set up a Punnett square to determine the possible combinations of alleles from the parents.

```
X X^h
-----------------
X^c | X X^c | X X^h |
-----------------
Y | Y X | Y X^h |
-----------------
```

### Step 4: Analyze the Progeny
From the Punnett square, we can derive the following combinations:
1. Female: XX^c (carrier for colorblindness)
2. Female: XX^h (carrier for hemophilia)
3. Male: XY (healthy male)
4. Male: XY^h (hemophilic male)

### Step 5: Determine the Proportions
- The progeny can be categorized as follows:
- 25% females are carriers for colorblindness (XX^c).
- 25% females are carriers for hemophilia (XX^h).
- 25% males are healthy (XY).
- 25% males have hemophilia (XY^h).

### Step 6: Conclusion
Based on the analysis, we can conclude:
- 25% of female progenies carry the gene for both hemophilia and colorblindness.
- 25% of male progeny carry only the gene for hemophilia.
- 25% of female progenies carry only the gene for colorblindness.
- Therefore, all the statements provided in the options are correct.

### Final Answer
The correct answer is **Option D: All of these statements are correct.**

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