This is a three part question:Mitosis and meiosis are both processes of eukaryotic cell division, with the same names used to describe different stags.a. What are the significant cellular and chromosomal events that occur during each stage of mitosis?b. What are the similarities and differences between the events that occur during each stage of mitosis and the corresponding stage of meiosis I?c. What are the similarities and differences between the events that occur during each stage of mitosis and the corresponding stage of meiosis II?

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Asked Sep 24, 2019
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This is a three part question:

Mitosis and meiosis are both processes of eukaryotic cell division, with the same names used to describe different stags.

a. What are the significant cellular and chromosomal events that occur during each stage of mitosis?

b. What are the similarities and differences between the events that occur during each stage of mitosis and the corresponding stage of meiosis I?

c. What are the similarities and differences between the events that occur during each stage of mitosis and the corresponding stage of meiosis II?

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Expert Answer

Step 1

Part a).

Mitosis can be defined as a process in which a single cell divides and produce two identical daughter cells. These two daughter cells are genetically similar to the parental cell. 

Step 2

Mitosis consists of five different phases:

  1. Interphase:

Prior to the start of mitosis, the cell is occupied in metabolic activities, replication, production of proteins needed for the spindle formation in this phase. It prepares for the next four mitotic phases.

  1. Prophase:

Mitosis actually starts at prophase. In this phase, thickening and coiling of the chromosomes occurs. The nucleolus shrinks and then disappears. The end of this phase is involved in the beginning and association of a group of fibres to arrange as a spindle. There occurs the degeneration of the nuclear membrane.

  1. Metaphase:

The chromosomes consist of the duplicate chromatids. These chromosomes are lined up at the cell midline. It is known as an equatorial plate.  

  1. Anaphase:

In anaphase each of the chromatid pair segregates in two alike chromosomes. These chromosomes are pulled towards the cell poles by the spindle fibres.

  1. Telophase:

During this phase, the chromosomes start to decondense. The spindle breaks. The nuclear membranes and nucleolus are reformed.

After this there is a small phase of cytokinesis. In this the cytoplasm of the parent cell divides to produce two daughter cells. These daughter cells have the same number and type of chromosomes as the parent cell.

After this the cell undergoes in an interphase and the mitosis cycle continues in this manner.

The main role of mitosis is in growth and replacement of the worn out cells.

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MITOSIS Interphase Prophase Metaphase Anaphase Telophase

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Step 3

Part b).

Meiosis can be defined as a unique cell division that decreases the number of parental chromosome by half into the four haploid daughter cells. Each daughter cell is genetically different from the paren...

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