Biology by Mikayla Allan https://padlet.com/mikayla_allan/89p13ntj469a patterns in nature en-us 2017-05-24 04:15:37 UTC 2025-10-22 22:48:33 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Planets.png Mitosis mikayla_allan https://padlet.com/mikayla_allan/89p13ntj469a/wish/173540545 What is mitosis?
a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
How does a nucleus of a cell divide?
The nuclear region disintegrates during cell division to expose the cell's DNA to the cytoplasm. After all the chromosomes get divided, rearranged and pulled to two opposite poles of the cell during the first three phases of equal cell division (prophase, metaphase and anaphase), the nuclear membrane is formed again around both the poles of chromosomes separately and consequently the entire cell's membrane also divides to give way to two cells.
Where is it occurring in each type of cell?
Mitosis occur only on vegetative or somatic cells (reproductive cells) . These cells are those that cell divide and produce only 1 type of cell. These includes bone cells, muscles, nerve, skin, cartilage and also the vegetative cells of plants.
Main Function?
Growth and repair.
]]> 2017-05-24 04:16:55 UTC https://padlet.com/mikayla_allan/89p13ntj469a/wish/173540545 Meiosis hannah_sandison https://padlet.com/mikayla_allan/89p13ntj469a/wish/173541454 What is meiosis?
Cell division that reduces the number of chromosomes by half and produces for gamete cells; required to produce egg and sperm cells for sexual reproduction.
How many divisions does meiosis involve?
2, Meiosis I and Meiosis II: Meiosis I separates the homologous paris of chromosomes. Meiosis II divides each chromosome into two copies]]> 2017-05-24 04:25:39 UTC https://padlet.com/mikayla_allan/89p13ntj469a/wish/173541454 Chromosomes hannah_sandison https://padlet.com/mikayla_allan/89p13ntj469a/wish/173541682 What are they?
Thread-like structures of nucleic acid found in the nucleus of most living cells, carrying genetic information in the form of genes.
Where do they come from?
Chromosomes come in matching pairs, one pair from each parent - each person has 46 chromosomes (23 from the mother and 23 from the father).
When can you see them?
Only when the cell is dividing.
How do chromosomes behave during mitosis?]]> 2017-05-24 04:27:27 UTC https://padlet.com/mikayla_allan/89p13ntj469a/wish/173541682 Helpful Websites mikayla_allan https://padlet.com/mikayla_allan/89p13ntj469a/wish/173542572 http://www.sparknotes.com/biology/cellreproduction/mitosis/section3.rhtml
http://stage6.pbworks.com/f/8.3+Patterns+in+Nature.pdf
http://www.yourgenome.org/facts/what-is-mitosis

]]> 2017-05-24 04:33:50 UTC https://padlet.com/mikayla_allan/89p13ntj469a/wish/173542572 Cytokinesis madeline_smith11 https://padlet.com/mikayla_allan/89p13ntj469a/wish/173544429 What is Cytokinesis?
Cytokinesis is the process in which the cell actually divides into two. With the two nuclei already at opposite poles of the cell, the cell cytoplasm separates, and the cell pinches in the middle, ultimately leading to cleavage. In most cells, the mitotic spindle determines the site where the cell will begin to invaginate and split. The first signs of this puckering are usually visible sometime during anaphase.
Why is cytokinesis needed?
To maintain efficient diffusion and osmosis.]]> 2017-05-24 04:50:15 UTC https://padlet.com/mikayla_allan/89p13ntj469a/wish/173544429 Mitosis in insects: hannah_sandison https://padlet.com/mikayla_allan/89p13ntj469a/wish/173545375 2017-05-24 04:59:23 UTC https://padlet.com/mikayla_allan/89p13ntj469a/wish/173545375 Mitosis in plants hannah_sandison https://padlet.com/mikayla_allan/89p13ntj469a/wish/173545897 - only certain areas undergo mitosis; ]]> 2017-05-24 05:06:33 UTC https://padlet.com/mikayla_allan/89p13ntj469a/wish/173545897