mitosisPPT.ppt

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Asexual Reproduction

MitosisDSQ: Mitosis is the process

in which the nucleusdivides to form two new

nuclei. How does mitosisdier in plants andanimals?

Mrs. Camp7thGrade Life Science


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DSQ: Mitosis is the process in which thenucleus divides to form two newnuclei. How does mitosis dier in

plants and animals?


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plants and animals?


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plants and animals?


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plants and animals?


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Asexual Reproduction

MitosisDSQ: Mitosis is the process in

which the nucleus divides toform two new nuclei. How doesmitosis dier in plants and

animals? ANAL!"#$rea% apart& stud' the pieces(

)here is a *uestion within a *uestion in

this DSQ. +an 'ou identif' the


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How do little elephants ,row up to $e

-/ elephants?


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)he process of ase0ual

reproduction $e,insafter a sperm fertili1es

an e,,.


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Skin cancer - the abnormal growth of

skin cells - most often develops on skin

exposed to the sun

!ell that reproduce b" asexual

reproduction reproduce constantl"


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Animated Mitosis Cyclehttp://www.cellsalive.com/mitosis.htm

# $nterphase

# %rophase

# Metaphase

# &naphase

# 'elophase ( !"tokinesis
http://www.cellsalive.com/mitosis.htmhttp://www.cellsalive.com/mitosis.htm


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# Chromosomes are copied(# doubles)

# Chromosomes appear as threadlike coils

(chromatin) at the start, but each chromosomeand its copy(sisterchromosome) change tosister chromatids at end of this phase

!)LLM)M*+&,),ucleus

!"toplasm


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&nimal !ell %lant !ell

%hotographs from http..wwwbiowebunccedu.biol111/.Stageshtm


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# Mitosisbegins (cell begins to divide)

# +entrioles(or poles) appear and begin tomove to opposite end of the cell.

# Spindle 2$ersform between the poles.

!entriolesSister chromatids

Spindle fibers


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Spindle fibers

!entrioles


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# +hromatids (or pairs of chromosomes)attach to the spindle bers.

!entrioles

Spindle fibers


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# +hromatids (or pairs of chromosomes)separate and begin to move to opposite

ends of the cell.

!entrioles

Spindle fibers


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# Two new nuclei form.

# Chromosomes appear as chromatin#threads rather than rods(.

# Mitosis ends.

,uclei,uclei

!hromatin


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# Cell membrane moves inward to create twodau,htercells each with its own nucleuswith identical chromosomes.

A i l Mi i R i


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Animal Mitosis -- Review

Interphase

Prophase

Metaphase

Anaphase

Telophase

Interphase


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Plant Mitosis -- ReviewInterphase

Prophase

Metaphase

Anaphase

Telophase

Interphase


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- !ell 2ivision


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0

- !ell 2ivision

0


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http://www.cellsalive.com/mitosis.htm

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