Mitosis

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What is mitosis?

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Mitosis is the process by which a single cell divides to produce two identical daughter cells, ensuring that each new cell receives an exact copy of the parent cell's DNA.

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What are the phases of mitosis?

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The phases of mitosis are Prophase, Metaphase, Anaphase, and Telophase.

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What happens during prophase?

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During prophase, the chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and the spindle apparatus begins to form.

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NGSS.HS-LS1-4

Front

What occurs during metaphase?

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During metaphase, chromosomes align at the cell's equatorial plane, and spindle fibers attach to the centromeres of the chromosomes.

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NGSS.HS-LS1-4

Front

What is anaphase?

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Anaphase is the stage of mitosis where sister chromatids are pulled apart to opposite poles of the cell.

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NGSS.HS-LS1-4

Front

What happens during telophase?

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During telophase, the chromosomes reach the poles, the nuclear envelope re-forms around each set of chromosomes, and the chromosomes begin to de-condense.

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NGSS.HS-LS1-4

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Why is DNA replication important before mitosis?

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DNA replication is crucial before mitosis to ensure that each daughter cell receives an identical set of genetic information.

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Front

What is a chromosome?

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A chromosome is a long, thread-like structure made of DNA and proteins that contains genetic information.

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What is a centromere?

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A centromere is the region of a chromosome where the two sister chromatids are joined together and where the spindle fibers attach during mitosis.

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NGSS.HS-LS1-4

Front

What is the difference between mitosis and meiosis?

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Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

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