Mitosis:
Download
1 / 21

Mitosis: Cell Division - PowerPoint PPT Presentation


  • 111 Views
  • Uploaded on

Mitosis: Cell Division. Cell Division - process by which a cell splits into two identical daughter cells Occurs in two main phase: . Interphase – cell copies DNA and prepares for division Mitosis – chromosomes separate into two new cells. What are chromosomes?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Mitosis: Cell Division' - lydia


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

Mitosis: Cell Division


Cell Division - process by which a cell splits into two identical daughter cells

Occurs in two main phase: 

Interphase – cell copies DNA and prepares for division

Mitosis – chromosomes separate into two new cells


What are chromosomes?

  • DNA containing cell’s genetic code

  • Each chromosome has a matching pair (homologous)

  • During interphase, each chromosome copies itself


Life Cycle of the Cell

  • Mitosis = nuclear division

  • Mitosis is followed by cytokinesis (cell division)

  • The steps of mitosis ensure that each new cell has the exact same number of chromosomes as the original

  • Interphase = growth phase, differentiation occurs


The cell cycle
The Cell Cycle

Interphase  (longest phase)

G1 - first growth (gap) phase

Synthesis - DNA makes a copy

G2 - second growth (gap) phase, preparing for mitosis

Mitosis - nucleus divides, ensuring each new cell has the exact number of chromosomes as parent



1. chromosomes visible (chromatids) Telophase

2. centrioles migrate to the poles

3. nuclear membrane disappears

4. nucleolus disappears

5. spindle forms




1. chromosomes disappear • chromatin Telophase

2. nuclear membrane reforms

3. nucleoli reappears

4. spindle disappears

5. centrioles duplicate


- division of the cytoplasm to form 2 new daughter cells Telophase

- organelles are divided

- daughter cells are genetically identical

Cells return to interphase




5 Telophase. Name the phase


6 Telophase. Name the phase


ad