The first step in mitosis is **prophase**. During prophase, several key events occur:

1. **Chromatin Condensation:** The chromatin fibers condense into distinct chromosomes, making it easier to segregate them during cell division. Each chromosome is composed of two sister chromatids joined at the centromere.

2. **Nuclear Envelope Breakdown:** The nuclear envelope begins to disintegrate, allowing the microtubules to access the chromosomes.

3. **Formation of the Mitotic Spindle:** The mitotic spindle, made of microtubules, begins to form. These filaments extend from the centrosomes, which are located at opposite poles of the cell.

4. **Centrosome Movement:** The centrosomes move apart to opposite ends of the cell, preparing for the segregation of chromosomes.

Overall, prophase is crucial for ensuring that the genetic material is correctly organized and prepared for the subsequent stages of mitosis.

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The first step in mitosis is **prophase**. During prophase, several key events occur:

1. **Chromatin Condensation:** The chromatin fibers condense into distinct chromosomes, making it easier to segregate them during cell division. Each chromosome is composed of two sister chromatids joined at the centromere.

2. **Nuclear Envelope Breakdown:** The nuclear envelope begins to disintegrate, allowing the microtubules to access the chromosomes.

3. **Formation of the Mitotic Spindle:** The mitotic spindle, made of microtubules, begins to form. These filaments extend from the centrosomes, which are located at opposite poles of the cell.

4. **Centrosome Movement:** The centrosomes move apart to opposite ends of the cell, preparing for the segregation of chromosomes.

Overall, prophase is crucial for ensuring that the genetic material is correctly organized and prepared for the subsequent stages of mitosis.

Knowee AI · Accepted Answer

The first step in mitosis is **prophase**. During prophase, several key events occur:

1. **Chromatin Condensation:** The chromatin fibers condense into distinct chromosomes, making it easier to segregate them during cell division. Each chromosome is composed of two sister chromatids joined at the centromere.

2. **Nuclear Envelope Breakdown:** The nuclear envelope begins to disintegrate, allowing the microtubules to access the chromosomes.

3. **Formation of the Mitotic Spindle:** The mitotic spindle, made of microtubules, begins to form. These filaments extend from the centrosomes, which are located at opposite poles of the cell.

4. **Centrosome Movement:** The centrosomes move apart to opposite ends of the cell, preparing for the segregation of chromosomes.

Overall, prophase is crucial for ensuring that the genetic material is correctly organized and prepared for the subsequent stages of mitosis.

The first step in mitosis is theprophase.anaphase.metaphase.prometaphase.Continue

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