Dolly is a product of

Options

A. Genetic engineering
B. Animal cloning
C. Cell fusion
D. Gene therapy

Answer

**Step-by-Step Text Solution:**

1. **Identify the Subject**: The question asks about "Dolly," who is known as the first cloned sheep.

2. **Understand Cloning**: Dolly was created through a process known as cloning, specifically a technique called somatic cell nuclear transfer (SCNT).

3. **Explain Somatic Cell Nuclear Transfer**: In SCNT, the nucleus of a somatic cell (a non-reproductive cell) is transferred into an egg cell (oocyte) from which the nucleus has been removed. This process involves:
- Taking a somatic cell from one sheep (the donor).
- Removing the nucleus from an egg cell of another sheep (the egg donor).
- Inserting the nucleus from the somatic cell into the enucleated egg cell.

4. **Formation of Zygote**: Once the nucleus is transferred, the egg cell is stimulated to divide and develop into an embryo, which is genetically identical to the donor sheep.

5. **Conclusion**: The resulting organism, Dolly, is a product of animal cloning, specifically through the method of somatic cell nuclear transfer.

6. **Final Answer**: Therefore, the correct answer to the question "Dolly is a product of" is **animal cloning**.

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