Mitosis Ppt
Próxima SlideShare
Cargando en...5
×

¿Le gusta esto? Compártalo con su red

Compartir
  • Full Name Full Name Comment goes here.
    ¿Está seguro?
    Tu mensaje aparecerá aquí
    Be the first to comment
    Be the first to like this
No Downloads

reproducciones

reproducciones totales
2,410
En SlideShare
2,410
De insertados
0
Número de insertados
0

Acciones

Compartido
Descargas
31
Comentarios
0
Me gusta
0

Insertados 0

No embeds

Denunciar contenido

Marcada como inapropiada Marcar como inapropiada
Marcar como inapropiada

Seleccione la razón para marcar esta presentación como inapropiada.

Cancelar
    No notes for slide

Transcript

  • 1. Review of the Stages of Mitosis An Interactive Presentation by Kevin Annis Education 205, section 09 Quit
  • 2. Mitosis
    • Interphase
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Cytokinesis
    • Resources
    Quit
  • 3. Interphase
    • The cell is in Interphase for most of its life cycle. In Interphase, the cell “prepares” for division by obtaining nutrients and growing, copying its DNA, and replicating its centrioles. The nuclear membrane is still visible.
    • Chromatin has not yet condensed into chromosomes in this stage.
    • The nucleolus is still present.
    Quit
  • 4. Prophase
    • In Prophase, DNA chromatin condense into easily visible chromosomes. The chromosomes are held together by centromeres. The two strands of chromosome are called sister chromatids.
    • The nuclear membrane and nucleolus disappear.
    • The centrioles move to opposite ends of the cell.
    Quit Click here to view video on Prophase
  • 5. Metaphase
    • Spindle fibres from the centrioles attach to the centromeres of the chromosomes
    • Chromosomes align at the middle of the cell. This organization helps to ensure that in the next phase, when the chromosomes are separated, each new nucleus will receive only one copy of each chromosome.
    Quit Click here to view video of Metaphase
  • 6. Anaphase
    • In anaphase, the spindle fibres shorten, which splits the chromosome strand into two separate, sister chromatids. The sister chromatids are pulled to opposite ends of the cell.
    • This is the only stage in the life of a cell where the chromosome number is greater than a 2n (or diploid) count.
    Quit Click here to view video of Anaphase
  • 7. Telophase
    • The chromosomes finally reach opposite poles (the ends) of the cell.
    • The nuclear envelope and nucleolus reform around each new set of chromosomes. The chromosomes disperse and are no longer visible.
    • Spindle fibres disperse and are no longer visible.
    Quit Click here to view video on Telophase
  • 8. Citokinesis
    • Citokinesis marks the end of mitosis in the cell cycle. It is where the cell officially splits into two separate cells, called daughter cells. Each daughter cell now has the same number of chromosomes as the original cell before mitosis. The cell splits when a furrow forms that pinches the cell in two.
    Quit Click on the link below to see video of the overall process of Mitosis http://www.sp.uconn.edu/~bi107vc/images/anim/mitosis.gif
  • 9. Video of Prophase Click the image above to see a histological video of Prophase Return to previous slide Quit
  • 10. Video of Metaphase Click the image above to see a histological video of Metaphase Return to previous slide Quit
  • 11. Video of Anaphase Click the image above to see a histological video of Anaphase Return to previous slide Quit
  • 12. Video of Telophase Click the image above to see a histological video of Telophase Return to previous slide Quit
  • 13. References
    • Interphase through Telophase images:
    • http://library.thinkquest.org/C0118084/Gene/Chromosomal_Inheritance/StagesMitosis.htm
    • Cytokinesis image:
    • http://citruscollege.edu/pic/46/c08_08a.jpg
    • Information obtained from:
    • http://www.biology.arizona.edu/Cell_bio/tutorials/cell_cycle/cells3.html
    Quit
  • 14. Concept Map Quit
  • 15. About the Author
    • Kevin Annis is a junior at Grand Valley State University. He is majoring in biology and is pursuing a minor in chemistry. Currently he is considering getting a second minor in psychology. He plans on teaching biology at the high school level when he completes college. He most enjoys the summer months, where he spends most any free time golfing or fishing.
    Quit Click here to send me an e-mail