Answer:
Fertilised ovum from sheep + cell in sheep's mammary gland isolation
Diploid one cell isolated + nucleus from ovum
Nucleus inserted into empty ovum
Ovum implanted in uterus of unrelated sheep
Ovum develops into foetus
Explanation:
In this process a nucleus from a fertilised ovum was removed and replaced with a diploid nucleus of a cell from the mammary glands of another sheep. The ovum was implanted into the sheep's uterus. The resulting foetus "Dolly" born similar to donor sheep.
