Telophase+1030

Telophase and Cytokeisis - Group Members - Enoa, Andrew, Reid, Eugene

Telophase is the final phase of mitosis in which the actual division occurs. During this phase, multiple processes take place simultaneously. The most noticeable of these is cytokinesis. Cytokinesis is the splitting of the cytoplasm, resulting in two separate daughter cells. By this point in time, the various organelles have already distributed themselves evenly at each spindle pole, making the process as simple as splitting the parent cell down the center. This involves different steps among plant cells and animal cells. =__Telophase Notes __= -Nuclear membranes from around each set of chromosomes and cell splits into two new cells. (Strangs Presentation)

-Telophase: final stage of mitosis and of meiosis I and II, in which the chromosomes reach the spindle poles, nuclear envelops form around each set of daughter chromosomes and the nucleoli reappear (as from Biology: Exploring Life : telophase (concept 9.3)
 * __Definition__**

__**Process**__ -Cells dividing in two -Chromosomes uncoiling -Nuclear envelope forming -Telophase begins when the chromosomes reach the poles of the spindle. During this stage, the processes that occurred in prophase are reversed (in which he spindle starts tugging the chromosomes toward the center of the cell) -The spindle disappears, two nuclear envelops reform (one around each set of daughter chromosomes), the chromosomes uncoil and lengthen, and the nucleoli reappear. -The division of one nucleus, mitosis, is now finished. -Cytokinesis completes the cell division process by dividing the cytoplasm into two daughter cells, each with a nucleus. Usually this process occurs along with telophase. (as from Chapter 9 : Concept 9.3)

(http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-115075-8/text/chapter9/concept9.3.html)



=Cytokinesis in Animals and Plants= = = -In animal cells, the first sign of cytokinesis is the appearance of an indentation around the middle of the cell. This indentation is caused by a ring of microfilaments in the cytoplasm just under the plasma membrane. The ring contracts like the pulling of a drawstring, depending the indentation and pinching the parent cell in two. Because the two new nuclei are forming at the ends of the cell, cytokinesis results in two new cell. (as from Chapter 9 : Concept 9.3).

-Plants - A cell plate forms between the new daughter cells, grows, and finally separates the cells

To watch a video on Telophase click the link. @http://videos.howstuffworks.com/hsw/5984-telophase-the-fourth-stage-of-mitosis-video.htm