Multiple Choice
Which of the following proteins prevents unwound DNA from re-annealing into a double-stranded DNA molecule during replication?
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14. DNA Synthesis
Introduction to DNA Replication
Multiple Choice
Which of the following statements about the process of DNA replication is false?
A
The leading strand is synthesized continuously, while the lagging strand is synthesized in Okazaki fragments.
B
DNA replication is semiconservative, meaning each new DNA molecule consists of one old strand and one new strand.
C
DNA replication occurs during the G1 phase of the cell cycle.
D
DNA polymerase can only add nucleotides to the 3' end of a growing DNA strand.
Verified step by step guidance1
Understand the phases of the cell cycle: The cell cycle consists of several phases, including G1, S, G2, and M. DNA replication occurs during the S phase, not the G1 phase.
Review the concept of semiconservative replication: In semiconservative replication, each new DNA molecule consists of one old strand and one new strand, which is a true statement.
Examine the synthesis of the leading and lagging strands: The leading strand is synthesized continuously, while the lagging strand is synthesized in short segments called Okazaki fragments. This statement is true.
Consider the role of DNA polymerase: DNA polymerase can only add nucleotides to the 3' end of a growing DNA strand, which is a true statement.
Identify the false statement: Based on the understanding of the cell cycle, the false statement is that DNA replication occurs during the G1 phase. It actually occurs during the S phase.
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