Mitosis:The phases And The Reproduction of Genetic Information

Mitosis is a cellular division wish ensures the multiplication and the maintenance of genetic information. It is a continuous process that occurs in four phases.

In Prophase, the chromatin condenses and forms the Chromosomes, wich are duplicated into Chromatid attached to Each other by a Centro mere.

In Metaphase, all the double Chromosomes are arranged in the center of the cell forming the equatorial plate.

In anaphase the two Chromatids of the same Chromosome separate and move away from each other towards the opposite poles of the cell: This is a polar ascension

In Telophase, The constriction of the Cytoplasm leads to the formation of two daughter cells, each having received a chromatid of each Chromosome

What Are The Four Main Phases Of The Cell Division?

Important Note To Start Out

The Main Purpose of Studying the division of the Cell is to observe the transmission of Genetic Information. This is possible thru observing the Functioning of the Chromosome during the division of the cell.

These are some useful Definitions that will be used to understand each phase of the Cell Division.

• Mitosis: divison that insures the conformed reproduction of cells
  
• Chromatin: material present in the nucleus of a cell. It condenses into Chromosomes when a cell divides.

• Chromosome: In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
  Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.
  
  
• Chromatid: One of two distinct units that make up a chromosome
  
• Centromere: Structure that holds together two Chromatids of the same chromosome
  
• Centrosome: Cellular organelle specific to animal cells

What Are The Main Parts Of the chromosome Involved In the Division of The Cell?

The Division Of The Cell -An Introduction-

All cells of an organism are derived from successive divisions of the zygote. The zygote divides many times. The number of cells is multiplied. The divisions of mitosis transmit to the daughter cells the whole genetic program carried by the chromosomes. The cell undergoes 5 phases of division: interphase, prophase, metaphase, anaphase, and telophase. The period between 2 divisions is called interphase. By undergoing successive divisions the zygote forms all the cells of an organism.

How Do the Chromosomes behave during cellular division?

How is the conservation of genetic information maintained?

How Are Chromosomes reproduced?

Figure 1- from http://healthinfoispower.wordpress.com/2008/09/

Welcome

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