Multiple Choice
During a single round of mitosis in the cell cycle, how many times does a cell pass through the sequence of prophase, metaphase, anaphase, and telophase (PMAT)?
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16. Cell Division
Mitosis
Multiple Choice
During mitosis in a human somatic cell, how many chromosomes are present in each daughter cell at the end of cytokinesis?
A
23 chromosomes
B
92 chromosomes
C
The chromosome number is randomly distributed between daughter cells
D
46 chromosomes
Verified step by step guidance1
Recall that a human somatic cell is diploid, meaning it contains 46 chromosomes (23 pairs) before mitosis begins.
Understand that during mitosis, the chromosomes are duplicated during the S phase of interphase, resulting in 92 chromatids, but these are still organized as 46 chromosomes, each consisting of two sister chromatids.
During mitosis, specifically in anaphase, the sister chromatids separate and are pulled to opposite poles of the cell, ensuring each future daughter cell will receive one copy of each chromosome.
At the end of mitosis and cytokinesis, the cell divides into two daughter cells, each receiving an identical set of chromosomes.
Therefore, each daughter cell ends up with the original diploid number of chromosomes, which is 46 chromosomes, maintaining genetic consistency.
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