The Four Stages of MitosisRevised by : Mary Jane M. Simblante

BSED-301 student major in Biological Sciences of Southern Leyte State University- Tomas Oppus Campus

PRAYER(Our Father)

Our Father who art in heaven,Holy be your name, your kingdom come, your will be done on Earth at

is in heaven…..

Give us these day our daily bread and forgive us our sins, as we forgive

those who sinned against us,Do not bring us to the test, but

deliver us from evil….Amen…..

Good Morning Class !

Just stay tune and learn a lot today……

Is everybody Present ???

Let’s watch a short video clip for you to motivate what is our lesson all

about today……..

The FourStages Of Mitosis

What is Mitosis?Mitosis is a form of nuclear

division that produces daughter nuclei containing the same number of chromosomes as the parent nucleus. The daughter nuclei are genetically identical.

ChromosomesChromosomes are made up of the

molecule deoxyribonucleic acid (DNA). DNA stores all the information that a cell needs in order to grow and to carry out vital activities. This information is stored as sections of DNA or genes. The daughter cells produced by mitosis are genetically identical to the parent cell.

Stages Of MitosisProcess of mitosis can be divided into 4 stages:

1. Prophase2. Metaphase3. Anaphase4. Telophase

ProphaseChromatin threads condense, coil and shorten to become chromosomes. Each chromosome consists of two sister chromatids attached at the centromere. The chromosomes are now visible under a microscope as x-shaped structures.

MetaphaseChromosome line up along the equatorial plane of the spindle. The centromere of each chromosome is attached on both sides to a spindle fiber.

AnaphaseEach centromere divides. The spindle fibers shorten and pull the chromatids apart to opposite poles of the cell. One the chromatids are separated, they are called daughter chromosomes.

Daughter chromosomes

TelophaseSpindle fibers break down. A nuclear envelope forms around the chromosomes at each pole of the cell. A nucleolus reforms in each nucleus and the chromosomes uncoil and lengthen to become thin chromatin threads.

Chromatin threads

Nuclear envelope

Nucleolus

19

Prophase Metaphase Anaphase Telophase

Question and Answer:

1. How can you distinguish each stages of mitosis?

2. In your own idea, what is the significance of these four stages of mitosis in our lives?

Assignment:In a ½ crosswise sheet of

paper, write a learning insight about the four stages of mitosis, at least three (3) paragraphs. Then, have an advance study for our next topic.

Goodbye class!Thank you for

coming…Class dismissed.

References: I would express my heartfelt thanks

and gratitude to the following references whom I got informative and reliable information:

cellcyclecelldivision-110213145759-phpapp02

http://image.sliesharecdn.com/biologyf4c5n7-131006101209-phpap

Teacher’s ProfileName: Ms. Mary Jane M.

SimblanteEducational Background

Elementary Education: School: San Roque Elementary School S.Y.: 2007-2008 Award: Most Helpful StudentSecondary Education: School: San Roque National High School S.Y.: 2011-2012 - Salutatorian Tertiary Education: School: SLSU-Tomas Oppus Degree: BSEd-Biological Sciences