Question

describe the changes occurs in prophase of mitosis​

Answer 1

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During prophase, the parent cell chromosomes — which were duplicated during S phase — condense and become thousands of times more compact than they were during interphase. ... Cohesin forms rings that hold the sister chromatids together, whereas condensin forms rings that coil the chromosomes into highly compact forms.

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Answer 2

Answer:

• Mitosis (equational division) is a type of asexual reproduction that occurs in unicellular organisms and non-reproductive cells of multicellular organisms. In this step of the cell cycle, newly formed DNA is separated into two in two daughter cells. It is called equational division because the nucleus separates into two daughter nuclei with the same number of chromosomes (the same amount of genetic material). Mitosis is followed by cytokinesis in which two cells get separated.
• Mitosis is divided into four phases; prophase (nuclear envelope disintegration and chromatin condensation), metaphase (chromosomes on the metaphasic plate), anaphase (splitting of sister chromatids), and telophase (cluster of chromosomes at two poles, and formation of nuclear envelope).
• The changes in the prophase - The prophase stage is divided into two parts; early prophase and late prophase. In the early prophase, chromatin starts condensing and forms X shaped structure called a chromosome. Each chromosome consists of two chromatids called sister chromatids. In the late prophase, the nuclear envelope disintegrates and chromosomes release into the cytoplasm. The nucleolus also vanishes and the mitotic spindle expands across the cell between centrioles, which are present at the two poles.

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