Monday, February 18, 2008

Cell Division

Introduction: Cell division, also known as mitosis, is exactly what it says. It is the dividing of cells into new ones. In order to remember the phased think of I-P-MAT. The best way to explain this is to look at a diagram. Here is one from www.ivy-rose.co.uk.

Here are the parts broken down:

Interphase: During this phase, you will see:

G1à Growth

S à Growth and DNA replication

G2 à Growth and final preparations for division

Then comes Mitosis: During this phase you will see:

Prophase à Nucleolus has disappeared, duplicated chromosomes are visible, and the centromeres begin to move to opposite poles.

(www.fresno.k12.ca.us)

Metaphase à Centromeres of chromosomes line up along the equator and spindle fibers attached to the sister chromatids come from the spindle poles.

(www.ivy-rose.co.uk)


Anaphase à Chromatids are pulled apart and move to opposite poles.

(botit.botany.wisc.edu)

Telophase à Daughter cells forming, nuclear envelopes and nucleoli appear, and a cleavage furrow forms.(bomi.ou.edu)

Meiosis is a little different and here is a chart explaining the differences.

(www.ivy-rose.co.uk)

Conclusion: Here is a very brief overview of the process of cell division. It is something, for years, that I have only been able to understand by looking at pictures. If someone made a picture book about mitosis, I would understand it very well. Now it is time for Part Two of the Lab Project. I decided this was a good place to put it because it demonstrates mitosis, translation, and transcription.

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