Please help me with this?? Cell reproduction.

[reb]

Hi,
Can any1 tell me the difference between fission and mitosis in cell reproduction?

Also how do amobae reproduce?

Thanks for any help you can offer.
Reb

[Jikx]

I'm just take a guess here..

Fission i believe is asexual cellular division of prokaryotes while mitosis is only occurs in eukaryotes.

As prokaryotes contain DNA arranged in a circular fashion, the process for DNA replication and division would be inherently different from eukaryotes which contain DNA within chormosomes.

edit - WOOT! Seems like i'm right http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookmito.html

[iansmith]

Originally posted by Jikx

Fission i believe is asexual cellular division of prokaryotes while mitosis is only occurs in eukaryotes.


this not totally rigth. Eukaryotes are also capable of fission. Protozoan can go through binary fission.

the definiton of binary fission is the asexual reproduction in which a cell or an organism seperate into two cells. it is seen chiefly in unicellular organisms.

The definition for mitosis is the process taking place in the nucleus of a eukaryotic cell and results in the formation of two nuclei, each with the same number of chrosomosome as the parent. A method of indirect division of a cell.


The term mitosis is used interchangeably with cell division, but strictly speaking it refers to nuclear division, whereas cytokinesis refers to division of the cytoplasm. In some cells, as in many fungi and the fertilized eggs of many insects, nuclear division occurs within the cell unaccompanied by division of the cytoplasm and formation of daughter cells.

Originally posted by reb
Also how do amobae reproduce?

by fission but mitosis takes place because they have a nucleus. It is similar to that of human cell but with some minor difference.

Some protozoan can reproduce sexually by syngamy (union of gametes) by the process of conjugation or other means.