how does pro phase occur
Answers
Prophase is the starting stage of cell division in eukaryotes. Prophase, in both mitosis and meiosis, is recognized by the condensing of chromosomes and separation of the centrioles in the centrosome. This organelle controls the microtubules in the cell, and each centriole is one half of the organelle. During prophase, they separate to provide microtubule centers in each new cell.
Mitosis occurs after interphase in eukaryotes. During interphase, the DNA is replicated, along with the organelles necessary to divide. This includes the centrosome, within which the centriole gets replicated. With a replicated genome and organelles, the cell can begin mitosis. The first stage of mitosis is prophase, and it sets the stage for the later stages of mitosis.
There are two stages of prophase during meiosis. Meiosis consists of two separate cell divisions, separated by a phase known as interkinesis. The first division of meiosis, meiosis I starts after a cell goes through interphase. As in the case of interphase preceding mitosis, each chromosome is replicated during synthesis of interphase. After meiosis I, the two daughter cells take a short break, called interkinesis. During this break, the DNA does not replicate, because it already consists of duplicated strands of DNA attached at the centromere.
Answer:
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