Sheep Dolly was genetically similar to

Options

A. The mother from which nucleated fertilized egg was taken
B. The mother from which the nucleus of udder cell was taken
C. The surrogate mother
D. Both surrogate mother and nuclear donor mothe

Answer

To solve the question regarding the genetic similarity of Sheep Dolly, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Cloning**:
- Dolly was the first mammal to be cloned from an adult somatic cell using a technique called somatic cell nuclear transfer (SCNT).

2. **Identify the Source of Genetic Material**:
- Dolly was created by taking a nucleated cell from the udder of a Finn Dorset sheep. This cell contained the genetic material (DNA) that would determine Dolly's characteristics.

3. **Recognize the Role of the Egg Cell**:
- The egg cell used in the cloning process was an enucleated egg cell from a Scottish Blackface sheep. This means that the nucleus (which contains genetic information) was removed from the egg cell.

4. **Determine Genetic Similarity**:
- Since Dolly’s DNA came from the udder cell of the Finn Dorset sheep, she would be genetically similar to that sheep. The enucleated egg cell contributed only the cellular machinery for development, not genetic material.

5. **Conclude the Answer**:
- Therefore, Dolly is genetically similar to the Finn Dorset sheep from which the udder cell was taken, not to the Scottish Blackface sheep.

### Final Answer:
Dolly was genetically similar to the Finn Dorset sheep from which the nucleated udder cell was taken.

---