Multiple Choice
During metaphase of mitosis, what important event occurs?
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11. Cell Division
Phases of Mitosis
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How many chromosomes do human cells have before mitosis begins?
A
46
B
23
C
12
D
92
Verified step by step guidance1
Understand that human cells are diploid, meaning they have two sets of chromosomes, one from each parent.
Recognize that before mitosis begins, a human cell is in the interphase stage where the chromosomes are duplicated but not yet separated.
Recall that humans have 23 pairs of chromosomes, totaling 46 chromosomes in a diploid cell.
During interphase, each chromosome is replicated, but the number of chromosomes remains the same; they are just duplicated.
Therefore, before mitosis begins, a human cell has 46 chromosomes, each consisting of two sister chromatids.
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