Chapter 20 DNA Replication and Repair. Replication is bidirectional.

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Presentation transcript:

Chapter 20 DNA Replication and Repair

Replication is bidirectional

DNA Replication is Semidiscontinuous

Okazaki Fragments

DNA Polymerase III is a Multisubunit Enzyme

DNA Polymerase III Subunit Organization

DNA Replication is a Processive Process.

Stages of DNA Replication Initiation Elongation Termination

PCNA analogous to E. coli b- subunit of E. coli DNA polymerase

Repair of UV Induced Thymine Dimers

General excision- repair pathway

Repair of damage resulting from the deamination of cytosine

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