Question

Choose the correct statement with reference to 'Dolly'

• A. She was created by taking the nucleus from unfertilised eggs and cytoplasm from fertilised eggs
• B. She was created by taking the nucleus from udder cells and cytoplasm from unfertilised eggs
• C. She was created by taking cytoplasm from udder cells and nucleus from the unfertilised egg
• D. She was created by taking cytoplasm from udder cell and nucleus from a fertilised egg
• E. She was created inside the test tube

Answer 1

The correct option is B

She was created by taking the nucleus from udder cells and cytoplasm from unfertilised eggs

'Dolly' was the name given to a clone of adult lamb by Ian Wilmut or Roslin Institue, Edinburgh, UK (February 1997). Dolly was cloned by the scientists, by extracting the nucleus from udder cells and cytoplasm from unfertilised eggs and then fusing them by electrical stimulation.

The fused cell developed into an embryo, which was implanted into the uterus of another sheep which acted as the surrogate mother. Thus, Dolly had two genetic mothers as confirmed by the analysis of her mitochondria by Erie Schon and Ian Wilmut in 1999.