Multiple Choice
During the S phase of the eukaryotic cell cycle, what is the primary event that occurs?
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16. Cell Division
DNA Replication
Multiple Choice
During S phase of the eukaryotic cell cycle, what is the primary event that occurs to ensure each daughter cell receives a complete genome?
A
Cytokinesis divides the cytoplasm to form two separate daughter cells.
B
The nuclear envelope breaks down and the mitotic spindle forms.
C
Chromosomes align at the metaphase plate to prepare for separation.
D
DNA is replicated, producing sister chromatids for each chromosome.
Verified step by step guidance1
Identify the phase of the cell cycle in question, which is the S phase (Synthesis phase) of the eukaryotic cell cycle.
Recall that the primary purpose of the S phase is to duplicate the cell's genetic material to ensure each daughter cell receives a complete set of chromosomes.
Understand that during S phase, DNA replication occurs, producing two identical sister chromatids for each chromosome.
Recognize that these sister chromatids remain attached until they are separated during later stages of mitosis, ensuring accurate distribution of genetic material.
Conclude that the key event in S phase is DNA replication, which is essential for maintaining genome integrity in daughter cells.
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