Asexual Reproduction
This presentation is the property of its rightful owner.
Sponsored Links
1 / 29

Asexual Reproduction PowerPoint PPT Presentation


  • 44 Views
  • Uploaded on
  • Presentation posted in: General

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.

Download Presentation

Asexual Reproduction

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


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?


Time s up

TIME’s UP!


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

How do little elephants grow up to be BIG elephants?


Why do animals shed their skin

Why do animals shed their skin?


Asexual reproduction

The process of asexual reproduction begins after a sperm fertilizes an egg.


Asexual reproduction

Three reasons why cells reproduce by asexual reproduction: 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

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

  • Interphase

  • Prophase

  • Metaphase

  • Anaphase

  • Telophase & Cytokinesis


Interphase occurs before mitosis begins

Interphaseoccurs 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

Plant Cell

Animal Cell

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


Prophase 1 st step in mitosis

Prophase 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

Plant Cell

Animal Cell

Spindle fibers

Centrioles

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


Metaphase 2 nd step in mitosis

Metaphase 2nd step in Mitosis

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

Centrioles

Spindle fibers


Metaphase

Metaphase

Plant Cell

Animal Cell

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


Anaphase 3 rd step in mitosis

Anaphase 3rdstep in Mitosis

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

Centrioles

Spindle fibers


Anaphase

Anaphase

Plant Cell

Animal Cell

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


Telophase 4th s tep in mitosis

Telophase4th step in Mitosis

  • Two new nuclei form.

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

  • Mitosis ends.

Nuclei

Nuclei

Chromatin


Telophase

Telophase

Plant Cell

Animal Cell

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


Cytokinesis occurs after mitosis

Cytokinesisoccurs after mitosis

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


Asexual reproduction

Animal Mitosis -- Review


Asexual reproduction

Plant Mitosis -- Review


Cell cycle

Cell Cycle


The cell cycle

- Cell Division

The Cell Cycle

29


Mitosis animation

MitosisAnimation

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


  • Login