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Transcript
DNA Replication: The Details
Read pages 219 – 222 in your text, Nelson Biology 12, and answer the following
questions.
1. What role does the enzyme helicase play in DNA replication?
2. What does the enzyme DNA polymerase III do?
3. What is the difference between the leading strand and the lagging strand?
Which strand is made in pieces?
4. What is the name of these pieces? What is the name of the enzyme that
attaches the little pieces together at the end?
5. Why does one strand of DNA have to be replicated in pieces? In other
words, why can’t both strands be synthesized continuously?
6. Look at the summary of DNA replication on page 222. Which two
enzymes function as proofreaders to make sure there are no mutations?
DNA Replication: The Details
Read pages 219 – 222 in your text, Nelson Biology 12, and answer the following
questions.
1. What role does the enzyme helicase play in DNA replication?
2. What does the enzyme DNA polymerase III do?
3. What is the difference between the leading strand and the lagging strand?
Which strand is made in pieces?
4. What is the name of these pieces? What is the name of the enzyme that
attaches the little pieces together at the end?
5. Why does one strand of DNA have to be replicated in pieces? In other
words, why can’t both strands be synthesized continuously?
6. Look at the summary of DNA replication on page 222. Which two
enzymes function as proofreaders to make sure there are no mutations?