Cloned sheep Dolly resembled the sheep from which ?

Options

A. egg cell was taken
B. udder cell was taken
C. surrogation was achieved
D. none of these

Answer

**Step-by-Step Solution:**

1. **Understanding Cloning**: Cloning involves creating a genetically identical copy of an organism. In the case of Dolly, she was the first mammal to be cloned from an adult somatic cell.

2. **Identifying the Source of DNA**: The DNA used to create Dolly came from a somatic cell. A somatic cell is any cell of the body that is not a sperm or egg cell. In Dolly's case, the somatic cell was taken from the udder of a sheep.

3. **Enucleated Egg Cell**: The egg cell used in the cloning process was enucleated, meaning its nucleus (which contains the genetic material) was removed. This step is crucial because it allows the somatic cell's nucleus to take over and dictate the genetic makeup of the clone.

4. **Fusion Process**: The enucleated egg cell was fused with the udder cell. This fusion allowed the nucleus from the udder cell to be introduced into the egg cell, effectively reprogramming the egg to develop into a new organism.

5. **Conclusion**: Since the nucleus from the udder cell contains the genetic information that determines the traits of the organism, Dolly resembles the sheep from which the udder cell was taken.

**Final Answer**: Cloned sheep Dolly resembled the sheep from which the udder cell was taken.

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