5.19 describe the stages in the production of cloned mammals involving the introduction of a diploid nucleus from a mature cell into an enucleated egg cell, illustrated by Dolly the sheep

Dolly is just used as an example as she was the first cloned mammal. The method is as follows...


- Remove the nucleus of an egg cell. This creates an enucleated egg cell (just a cell without a nucleus)

- Insert the nucleus of a diploid cell of the mammal you want to clone

- shock the new cell by electric shock to start division by mitosis. This creates an embryo

- Implant the embryo into the uterus of a surrogate mother (has to be the same species) to develop.

Now wait for the animal to be born