Multiple Choice
In a typical human somatic cell, how many chromosomes are present at the beginning of mitosis (prophase), before sister chromatids separate?
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16. Cell Division
Mitosis
Multiple Choice
During mitosis in a human somatic cell (starting with 46 chromosomes), how many chromosomes does each daughter cell have after cytokinesis?
A
23
B
46
C
0
D
92
Verified step by step guidance1
Recall that a human somatic cell starts with 46 chromosomes, which is the diploid number (2n = 46).
Understand that mitosis is a process where a single cell divides to produce two genetically identical daughter cells, maintaining the chromosome number.
During mitosis, the chromosomes are duplicated during the S phase of interphase, so the cell temporarily has 92 chromatids, but these are organized into 46 chromosomes each consisting of two sister chromatids.
In mitosis, sister chromatids separate during anaphase, and each daughter cell receives one chromatid from each chromosome, restoring the chromosome number to 46 in each daughter cell.
After cytokinesis, the physical division of the cytoplasm, each daughter cell ends up with 46 chromosomes, the same as the original parent cell.
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