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Asexual Reproduction. Mitosis. DSQ: Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals?. Mrs. Camp 7 th Grade Life Science. 1. Ready?. Begin!. 4:00.

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Asexual Reproduction

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Asexual reproduction

Asexual Reproduction

Mitosis

DSQ: Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals?

Mrs. Camp

7th Grade Life Science

1


Ready
Ready?

Begin!


Asexual reproduction
4:00

DSQ: Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals?


Asexual reproduction
3:00

DSQ: Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals?


Asexual reproduction
2:00

DSQ: Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals?


Asexual reproduction
1:00

DSQ: Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals?



Asexual reproduction

Asexual Reproduction

Mitosis

DSQ: Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals?

ANALYZE

(break apart, study the pieces)

There is a question within a question in this DSQ. Can you identify the question within the DSQ?

8





Asexual reproduction

Three reasons why cells reproduce by asexual reproduction: fertilizes an egg. 1. Growth 2. Repair 3. Replacement

Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun.

Cell that reproduce by asexual reproduction reproduce constantly.


Asexual reproduction

Animated Mitosis Cycle fertilizes an egg.

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

  • Interphase

  • Prophase

  • Metaphase

  • Anaphase

  • Telophase & Cytokinesis


Interphase occurs before mitosis begins
Interphase fertilizes an egg.occurs before mitosis begins

  • Chromosomes are copied (# doubles)

  • Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phase

CELL MEMBRANE

Nucleus

Cytoplasm


Interphase
Interphase fertilizes an egg.

Plant Cell

Animal Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm


Prophase 1 st step in mitosis
Prophase fertilizes an egg.1st step in Mitosis

  • Mitosis begins (cell begins to divide)

  • Centrioles(or poles) appear and begin to move to opposite end of the cell.

  • Spindle fibers form between the poles.

Centrioles

Sister chromatids

Spindle fibers


Prophase
Prophase fertilizes an egg.

Plant Cell

Animal Cell

Spindle fibers

Centrioles

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm


Metaphase 2 nd step in mitosis
Metaphase fertilizes an egg. 2nd step in Mitosis

  • Chromatids (or pairs of chromosomes) attach to the spindle fibers.

Centrioles

Spindle fibers


Metaphase
Metaphase fertilizes an egg.

Plant Cell

Animal Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm


Anaphase 3 rd step in mitosis
Anaphase fertilizes an egg.3rdstep in Mitosis

  • Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell.

Centrioles

Spindle fibers


Anaphase
Anaphase fertilizes an egg.

Plant Cell

Animal Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm


Telophase 4th s tep in mitosis
Telophase fertilizes an egg.4th step in Mitosis

  • Two new nuclei form.

  • Chromosomes appear as chromatin (threads rather than rods).

  • Mitosis ends.

Nuclei

Nuclei

Chromatin


Telophase
Telophase fertilizes an egg.

Plant Cell

Animal Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm


Cytokinesis occurs after mitosis
Cytokinesis fertilizes an egg.occurs after mitosis

  • Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.


Asexual reproduction

Animal Mitosis -- Review fertilizes an egg.


Asexual reproduction

Plant Mitosis -- Review fertilizes an egg.


Cell cycle
Cell Cycle fertilizes an egg.


The cell cycle

- Cell Division fertilizes an egg.

The Cell Cycle

29


Mitosis animation
Mitosis fertilizes an egg.Animation

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


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