Chromosome Number Maintenance During Mitosis
Which of the following conclusions is best supported by evidence that a diploid cell with 10 chromosomes, after undergoing DNA replication during interphase, produces 20 sister chromatids and, following mitosis, distributes these evenly so that each daughter cell receives exactly 10 chromosomes?
Despite the duplication of genetic material in interphase, mitosis inherently results in a doubling of chromosome number in each daughter cell, contradicting the concept of equal distribution.
The replication process transforms the 10 chromosomes into 20 completely separate chromosomes that are then randomly divided, so there is no expectation of equal partitioning.
Mitosis results in the unequal distribution of sister chromatids, often leading to one daughter cell with all 20 and the other with none, which is inconsistent with normal cell division.
Proper mitosis ensures that the 20 sister chromatids segregate equally, thereby each daughter cell inherits 10 chromosomes, preserving the original chromosomal number.
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