Which of the following statements about DNA replication in bacteria is false?ANSWERDNA replication proceeds in only one direction around a circular chromosome.The leading strand is made continuously.DNA polymerase can only proceed in a 5’ to 3’ direction.DNA replication is semiconservative.
Question
Which of the following statements about DNA replication in bacteria is false?ANSWERDNA replication proceeds in only one direction around a circular chromosome.The leading strand is made continuously.DNA polymerase can only proceed in a 5’ to 3’ direction.DNA replication is semiconservative.
Solution
To determine which statement about DNA replication in bacteria is false, let's analyze each statement step by step:
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DNA replication proceeds in only one direction around a circular chromosome.
- In bacteria, DNA replication starts at a single origin of replication and proceeds bidirectionally around the circular chromosome. This means that replication occurs in two directions, not just one.
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The leading strand is made continuously.
- This statement is true. During DNA replication, the leading strand is synthesized continuously in the direction of the replication fork.
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DNA polymerase can only proceed in a 5’ to 3’ direction.
- This statement is true. DNA polymerase can only add nucleotides to the 3’ end of a growing DNA strand, so it synthesizes DNA in the 5’ to 3’ direction.
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DNA replication is semiconservative.
- This statement is true. Semiconservative replication means that each new DNA molecule consists of one old (parental) strand and one newly synthesized strand.
Based on the analysis, the false statement is:
DNA replication proceeds in only one direction around a circular chromosome.
Similar Questions
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