Which is genetically-transmitted diseases ?
A. Colour blindness
B. Haempphllia
C. Musclar dystrophuy
D. None of these

Options

A. A,B,C
B. A,B,C,D
C. B,C,D
D. A,B,C

Answer

To determine which of the given options are genetically transmitted diseases, we will analyze each option one by one based on the information provided in the video transcript.

### Step-by-Step Solution:

1. **Identify Color Blindness**:
- Color blindness is a genetic condition caused by a defect in the gene located on the X chromosome.
- In males, who have one X and one Y chromosome (XY), color blindness occurs if the X chromosome is defective (represented as XC).
- In females, who have two X chromosomes (XX), color blindness occurs only if both X chromosomes are defective (XC XC).
- **Conclusion**: Color blindness is a genetically transmitted disease.

2. **Identify Hemophilia**:
- Hemophilia is also a genetic disorder linked to the X chromosome.
- Similar to color blindness, it is a recessive condition.
- Males with one defective X chromosome (XH Y) will express hemophilia, while females (XH XH) will express it only if both X chromosomes are defective.
- **Conclusion**: Hemophilia is a genetically transmitted disease.

3. **Identify Muscular Dystrophy**:
- Muscular dystrophy is a group of genetic diseases that cause progressive weakness and loss of muscle mass.
- The most common form, Duchenne Muscular Dystrophy, is also linked to the X chromosome.
- **Conclusion**: Muscular dystrophy is a genetically transmitted disease.

4. **Evaluate the Options**:
- A. Color blindness - Yes, genetically transmitted.
- B. Hemophilia - Yes, genetically transmitted.
- C. Muscular dystrophy - Yes, genetically transmitted.
- D. None of these - Incorrect, as the first three options are genetically transmitted diseases.

### Final Answer:
All the options A, B, and C are genetically transmitted diseases. Therefore, the correct response is that options A, B, and C are genetically transmitted diseases.