Q:

What happens during prophase?

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Quick Answer

Prophase is one of the first phases of mitosis and it focuses on preparing the spindles, metaphase plate and chromosomes to work in the later phases of the process. Prophase exists in both mitosis and meiosis.

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What happens during prophase?
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Full Answer

During mitosis and meiosis, prophase is the first phase of the division cycle after DNA replication in G and S phases. The main value of prophase is that the chromatin condenses to become chromosomes, which will later be separated in various ways during the final stages of mitosis and meiosis. The nucleolus in the nucleus also disappears and the cell membrane disappears, which makes it easy for the cell to start to divide into two. The miotic spindles on both sides of the cell, which is made of microtubules, is formed during prophase and gets ready to move. This is an important part of the division, as it pulls the chromosomes apart to their respective side.

In both meiosis and mitosis, prophase plays the same role; there are no differences between the three instances, except for the fact that meiosis is only with sex cells (gametes) and mitosis is with regular somatic cells. In meiosis, prophase happens twice because there are two divisions that result in four total cells.

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Related Questions

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    What are the four phases of mitosis?

    A:

    The four phases of mitosis are prophase, metaphase, anaphase and telophase. Each stage has its own process.

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    How does meiosis contribute to genetic diversity?

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    During prophase I of meiosis, homologous chromosomes cross over and contribute genetic information from the mother and father cells. When this happens, the resultant haploid cell contains its own genetic information.

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    How does prophase I differ from prophase II?

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    The major difference between prophase I and prophase II is the genetic recombination process that occurs during prophase I, but does not repeat in prophase II. During prophase I, the duplicated homologous pairs line up and cross over, which is the process by which the chromatids exchange genetic information. Because this process occurs during prophase I, it does not need to repeat during prophase II.

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    What are the stages of mitosis?

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    The stages of mitosis are prophase, prometaphase, metaphase, anaphase and telekinesis. Mitosis is a biological activity essential for reproduction. In this series of stages, it involves the duplication and division of chromosomes into different groups.

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