Multiple Choice
In eukaryotic cells, how many rounds of nuclear division occur during mitosis?
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16. Cell Division
Mitosis
Multiple Choice
During mitosis in a typical somatic cell, why are the daughter cells genetically identical to the parent cell (assuming no mutations)?
A
Because cytokinesis randomly partitions chromosomes, but identical gene expression patterns restore the original genome
B
Because mitosis reduces the chromosome number by half, ensuring each daughter cell matches the parent genome
C
Because sister chromatids are separated and equally distributed to each daughter cell after DNA replication in S phase
D
Because homologous chromosomes undergo crossing over during prophase, creating identical chromatids
Verified step by step guidance1
Understand that the question asks why daughter cells are genetically identical to the parent cell after mitosis, assuming no mutations occur.
Recall that before mitosis begins, during the S phase of interphase, the cell's DNA is replicated, producing identical sister chromatids for each chromosome.
Recognize that mitosis involves the separation of these sister chromatids, ensuring that each daughter cell receives one copy of each chromosome.
Note that this process maintains the chromosome number and genetic content, so the daughter cells have the same genetic information as the parent cell.
Contrast this with meiosis, where chromosome number is halved and genetic recombination occurs, which is not the case in mitosis.
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