Multiple Choice
Which of the following attributes of DNA is most crucial to its accurate duplication?
14. DNA Synthesis
Introduction to DNA Replication
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In prokaryotes, the rate of elongation during DNA replication is __________ the rate in eukaryotes.
A
much slower than
B
about the same as
C
sometimes faster and sometimes slower than
D
The rates are not comparable because elongation only occurs in prokaryotes.
E
much faster than
Verified step by step guidance1
Understand the context of DNA replication in prokaryotes and eukaryotes. Prokaryotes, such as bacteria, have simpler cellular structures and typically replicate their DNA faster than eukaryotes.
Consider the complexity of the organisms. Eukaryotes have more complex cellular machinery and larger genomes, which generally results in slower DNA replication rates compared to prokaryotes.
Recall that prokaryotic cells often have a single, circular chromosome, which allows for rapid replication. In contrast, eukaryotic cells have multiple, linear chromosomes, which require more time to replicate.
Recognize that the rate of DNA replication is influenced by the number of replication origins. Prokaryotes usually have a single origin of replication, while eukaryotes have multiple origins, but the overall process is slower due to the complexity of the eukaryotic replication machinery.
Conclude that the rate of elongation during DNA replication in prokaryotes is much faster than in eukaryotes, due to the simpler structure and fewer regulatory mechanisms in prokaryotic cells.
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