3.5 Cloning

An udder cell is taken from Sheep A. An egg cell is taken from Sheep B.

Step 1

The nucleus of Sheep B’s egg cell is removed, leaving an empty egg.

Step 2

Sheep A’s enucleated cell is fused with Sheep B’s empty egg cell.

Step 3

An electric shock stimulates division of the egg cell, which are then implanted into Sheep C, a surrogate.

Step 4