Meroblastic segmentation occurs duri ng the development of

Options

A. Pigeon
B. Human
C. Frog
D. Dog,Fish.

Answer

**Step-by-Step Solution:**

1. **Understanding Segmentation**: Segmentation in embryonic development refers to the process of cell division that occurs after fertilization. There are two main types of cleavage: holoblastic and meroblastic.

2. **Defining Meroblastic Segmentation**: Meroblastic segmentation is a type of cleavage where the egg does not divide completely. This occurs in eggs that have a large amount of yolk, leading to partial cell division.

3. **Identifying Organisms with Meroblastic Segmentation**: Meroblastic cleavage is typically observed in organisms with yolk-rich eggs, such as birds, reptiles, and certain fish.

4. **Analyzing the Options**:
- A. P-gene (likely referring to a type of bird)
- B. Human (which undergoes holoblastic cleavage)
- C. Frog (which also undergoes holoblastic cleavage)
- D. Dog and fish (dogs undergo holoblastic cleavage, while some fish exhibit meroblastic cleavage)

5. **Selecting the Correct Answer**: Since meroblastic segmentation is characteristic of birds, the best option that fits this description is A. P-gene.

6. **Conclusion**: Therefore, the correct answer is option A: P-gene.