Multiple Choice
During which phase of mitosis do sister chromatids separate and move toward opposite poles of the cell?
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9. Mitosis and Meiosis
Mitosis
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At the end of interphase, how many chromatids does a human somatic cell contain?
A
92
B
184
C
46
D
23
Verified step by step guidance1
Recall that a human somatic cell is diploid and contains 46 chromosomes in total (23 pairs).
Understand that during interphase, specifically the S phase, DNA replication occurs, so each chromosome is duplicated to form two sister chromatids.
Since each chromosome now consists of two chromatids, multiply the number of chromosomes by 2 to find the total number of chromatids.
Express this mathematically as: $\text{Number of chromatids} = 46 \times 2$.
Calculate the product to find the total chromatids present at the end of interphase.
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