Florida Biology EOC Practice Test 2026 - Free Biology End-of-Course Practice Questions and Study Guide

Question: 1 / 400

What occurs during anaphase of mitosis?

Chromosomes become visible

Chromosomes are pulled apart

During anaphase of mitosis, the key event is that chromosomes are pulled apart toward opposite poles of the cell. This process occurs after the chromosomes have been lined up at the metaphase plate during metaphase. The sister chromatids, which are identical copies of each chromosome, are separated due to the action of spindle fibers that connect to the centromeres. As the spindle fibers shorten, they effectively pull the chromatids apart, ensuring that each new daughter cell will receive an identical set of chromosomes.

The other options describe different stages or events in the mitotic process; for example, chromosomes becoming visible happens during prophase, while the alignment of sister chromatids at the cell center occurs during metaphase. The reformation of the nuclear membrane takes place in telophase. Understanding the specific events of each phase is crucial for grasping the overall process of cell division.

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Sister chromatids align at the cell center

The nuclear membrane reforms

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