Uracil Is Occasionally Incorporated into DNA During Replication

question 25

Multiple Choice

Uracil is occasionally incorporated into DNA during replication. Why is it subsequently removed?

• A) The presence of uracil would interfere with parental strand recognition.
• B) Uracil is unstable and would cause mutations if left in the DNA.
• C) Uracil makes the same hydrogen bonds as thymine so it might be confused with thymine.
• D) Cytosine is unstable and occasionally converts to uracil.

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