Unit 3-Molecular Genetics Lesson 2 4.0

Question 1

What is the role of DNA polymerase II during DNA replication?

Answer 1

DNA polymerase II is an enzyme that proofreads the new DNA strand for any nucleotide errors and replaces the mismatched nucleotides with the correct bases.

Question 2

What can lead to mistakes during DNA replication?

Answer 2

The large number of proteins (enzymes) involved in the DNA replication process increases the chance of mistakes occurring.

Question 3

What happens when an incorrect nucleotide is paired with the template strand?

Answer 3

The DNA becomes misshapen.

Question 4

Are there other proteins involved in DNA replication besides DNA polymerase II?

Answer 4

Yes, there are other proteins present to check over the replicated DNA and make any necessary adjustments.

Question 5

How does DNA polymerase II contribute to repairing errors in DNA?

Answer 5

DNA polymerase II fixes errors by proofreading and replacing mismatched nucleotides with the correct bases.