Friday, January 14, 2011

Meiosis vs Mitosis

We've been learning about the differences in Meiosis & Mitosis..
So, here's what happens...

Meiosis: 
Thanks to Oscar Hertwig, we know of Meiosis. This occurs in plants, animals, fungi, and humans. During Meiosis, there are four haploid daughter cells that are produced. This process will only create sex cells (male sperm cells, female egg cells).  If you want the definition... Meiosis is a type of cellular reproduction in which the number of chromosomes are reduced by half through the separation of homologous chromosomes in a diploid cell.  The process in Meiosis is a little longer than in Mitosis. Here's what happens....  Interphase, Prophase I, Metaphase I, Anaphase I, Telophase I, Prophase II, Metaphase II, Anaphase II and Telophase II. This is a sexual type of reproduction and the cells that are produced are genetically different. During this process crossing over does happen, and the number of chromosomes are reduced by half.


Mitosis:
Mitosis was discovered by Walther Flemming. This process occurs in ALL organisms and produces two diploid daughter cells. Unlike Meiosis, crossing over does not happen here. Basically this process makes everything Meiosis doesn't (sex cells). This is the process:  Interphase, Prophase, Metaphase, Anaphase, Telophase and Cytokinesis. Mitosis is an asexual process and the cells that are produced are identical from the original cell. There is only one single division.







here's where i got my information from (: feel free to go for more info. http://www.diffen.com/difference/Meiosis_vs_Mitosis