In order for daughter cells to contain a complete set of DNA and chromosomes, the genome of a cell must be duplicated before it divides. The nucleus must accurately separate chromosomes. At the same time, the cytoplasm must divide and the organelles must be distributed to the daughter cells. Which model BEST describes the sequence of events in a normal cell division?

Question

In order for daughter cells to contain a complete set of DNA and chromosomes, the genome of a cell must be duplicated before it divides. The nucleus must accurately separate chromosomes. At the same time, the cytoplasm must divide and the organelles must be distributed to the daughter cells. Which model BEST describes the sequence of events in a normal cell division?
Responses
A	cytokinesis -> mitosis -> G1 -> S -> G2cytokinesis -> mitosis -> G1 -> S -> G2
B	S -> G1 -> G2 -> mitosis -> cytokinesisS -> G1 -> G2 -> mitosis -> cytokinesis
C	G1 -> S -> G2 -> mitosis -> cytokinesisG1 -> S -> G2 -> mitosis -> cytokinesis
D	mitosis -> G1 -> S -> G2 -> cytokinesis

GPT-4o mini · Answer

The correct response that BEST describes the sequence of events in a normal cell division is:

C: G1 -> S -> G2 -> mitosis -> cytokinesis

Here's a brief explanation of the phases:

G1 (Gap 1): The cell grows and carries out normal functions. It prepares for DNA replication.
S (Synthesis): The cell's DNA is replicated, so each chromosome is duplicated.
G2 (Gap 2): The cell continues to grow and prepares for mitosis, checking for any errors in DNA replication.
Mitosis: The replicated chromosomes are separated into two nuclei.
Cytokinesis: The cytoplasm divides, resulting in two daughter cells.

This sequence ensures that the cells properly replicate their genomes and divide accurately.