Multiple Choice
In the overview of DNA replication, which enzyme is primarily responsible for unzipping (unwinding) the DNA double helix at the replication fork to prepare for replication?
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8. DNA Replication
Overview of DNA Replication
Multiple Choice
In the context of the overview of DNA replication, what is the primary purpose of DNA replication in a cell?
A
To increase genetic variation by exchanging DNA segments between homologous chromosomes
B
To convert DNA into RNA so proteins can be synthesized by ribosomes
C
To repair all DNA damage by removing mutations from the genome
D
To produce an identical copy of the cell’s DNA so each daughter cell receives a complete genome during cell division
Verified step by step guidance1
Understand that DNA replication is a fundamental biological process that occurs before a cell divides.
Recognize that the main goal of DNA replication is to ensure that each daughter cell receives an exact copy of the parent cell's DNA.
Note that this process involves unwinding the double helix and synthesizing two new complementary strands using the original strands as templates.
Distinguish DNA replication from other processes such as genetic recombination (which increases variation), transcription (which converts DNA to RNA), and DNA repair (which fixes mutations).
Conclude that the primary purpose of DNA replication is to maintain genetic continuity by producing identical copies of the genome for daughter cells during cell division.
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