What kind of cell or cells were used to make Dolly?

1 Answer
Sep 12, 2017

Dolly, the sheep, was made by cloning.


A diploid nucleus of a somatic cell, taken from an adult female sheep, was introduced inside an enucleated ovum (=egg cell) harvested from another sheep.

The nucleus came from an udder (=mammary gland of female sheep) cell.

The newly created cell was treated in such a manner that it started to behave like a zygote. Cleavage division began and the early embryo was then transferred in the womb of a surrogate sheep.