Understanding DNA Replication

Front

Why does DNA replication need to happen?

Back

To ensure that each daughter cell receives an identical set of chromosomes

Front

During which part of the cell cycle does DNA replication take place?

Back

S phase

Front

What is the accepted model of DNA replication called?

Back

Semi-conservative model

Front

What does semi-conservative replication mean?

Back

Each new DNA molecule consists of one old strand and one new strand

Front

What is the enzyme that catalyses DNA replication?

Back

DNA polymerase

Front

Which two scientists undertook the experiment that showed how DNA replication happens?

Back

Meselson and Stahl

Front

Which part of the DNA molecule was labelled in the experiment?

Back

Nitrogenous base

Front

What were they labelled with?

Back

Front

How do the results of the Meselson-Stahl experiment show that conservative and dispersive replication do not happen?

Back

By showing intermediate DNA after one generation

Front

What are the main steps in DNA replication?

Back

Initiation, elongation, termination