New nucleotides — adenine, cytosine, guanine or thymine — are filled into the gaps on
the other side of the backbone, pairing with their counterparts (adenine with thymine and cytosine with guanine) and replicating the DNA to make a copy for both the old and the new cells.
Cats should be placed on their
side, and one hand should be placed over the
backbone near the shoulder blades, while the
other hand is cupped around the underside
of the chest where, if the cat was standing, just behind where the elbows would be.