DNA Replication

Read the article DNA Polymerase – Keeping you cloned then annotate the diagram below showing the

process of DNA replication.

Complete the following using the most appropriate words:

DNA replication involves the separation of the two ________________ chains that make up the molecule.

Firstly the double helix is opened up by an enzyme called _________________. The points where the helix

splits are called ______________________. To allow the helix to untwist without causing a tangled mess,

one chain is broken by an enzyme called __________________________. One new strand of DNA is made

by the enzyme known as ______________________in a continuous process. On the other strand the

enzyme works in the opposite direction making small sections of ________ DNA simultaneously. The

sections are then joined together by the enzyme ______________. Any incorrect paired bases are removed

using the enzyme ___________________. As the new DNA contains half of the original DNA, the process is

known as _________________________ replication.