Multiple Choice
Which term best describes the process of copying DNA prior to cell division?
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16. Cell Division
DNA Replication
Multiple Choice
During the S phase of the eukaryotic cell cycle, what is the primary event that occurs?
A
The nuclear envelope breaks down and the mitotic spindle forms
B
DNA is replicated so each chromosome is duplicated, producing sister chromatids
C
RNA polymerase transcribes most genes to prepare for mitosis
D
Cytokinesis divides the cytoplasm to form two daughter cells
Verified step by step guidance1
Identify the phase of the cell cycle mentioned: the S phase, which stands for 'Synthesis' phase.
Recall that the primary function of the S phase is related to DNA, specifically the replication process.
Understand that during the S phase, each chromosome is duplicated to produce two identical sister chromatids, ensuring genetic material is copied before cell division.
Note that other events like nuclear envelope breakdown and mitotic spindle formation occur later, during mitosis, not the S phase.
Recognize that RNA polymerase activity and cytokinesis are also separate processes occurring at different stages of the cell cycle.
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