객관식
During prophase of mitosis, what happens to the cell's DNA?
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9. Mitosis and Meiosis
Mitosis
객관식
During prophase of mitosis, what happens to the DNA?
A
It aligns at the cell’s equator (metaphase plate).
B
It is replicated to form sister chromatids.
C
It separates and moves to opposite poles as sister chromatids.
D
It condenses into visible chromosomes as chromatin coils and shortens.
검증된 단계별 안내1
Understand the stages of mitosis and the key events that occur in each phase, focusing on prophase.
Recall that during prophase, the chromatin (which is the uncondensed form of DNA) undergoes structural changes.
Recognize that the DNA condenses by coiling and shortening, transforming from a loose chromatin state into visible chromosomes.
Note that sister chromatids are already formed before mitosis begins during the S phase of interphase, so replication does not occur in prophase.
Distinguish prophase from metaphase and anaphase, where chromosomes align at the metaphase plate and sister chromatids separate, respectively.
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