Login

Join for Free!
118896 members


cell division

Discussion of all aspects of cellular structure, physiology and communication.

Moderator: BioTeam

cell division

Postby bio1618 » Mon Oct 19, 2009 1:10 am

Is mitosis the same as cell division?

I want to say yes because mitosis is a type of cell division and when you speak of mitosis, it's usually referred to cell division. However, mitosis doesn't include all of cell division becaue cell division continues all the way through cytokinesis, which is not mitosis. I'm a little confused and cannot give a yes or no to this answer. Please help, thank you.
bio1618
Garter
Garter
 
Posts: 3
Joined: Sun Oct 18, 2009 2:57 pm

Re: cell division

Postby bioantDrJ » Mon Oct 19, 2009 5:16 am

No. Mitosis is not cell division. It is a phase in which the cell divides, however in its entirety it is not cell division. You could go into specifics with your answer and explain the phases. Prophase, interphase, anaphase, metaphase, etc. Do not say that the cell cycle is cell division though. The cell cycle begins with the birth of a cell and ends with its death, it covers much more than reproduction, though a cell usually does not stop reproducing until its death unless it is in g3 stage of the cycle, which is the resting checkpoint, which can be temporary or permanent.
bioantDrJ
Garter
Garter
 
Posts: 1
Joined: Mon Oct 19, 2009 1:10 am

Postby JackBean » Mon Oct 19, 2009 8:04 am

And I thought, that the cell cycle is in between two points, e.g. G1 phases of cell's life...
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5690
Joined: Mon Sep 14, 2009 7:12 pm


Postby kolean » Mon Oct 19, 2009 12:09 pm

Cell division is a term used for any cell reproducing itself and dividing into two individual cells. The term mitosis is technically used for a phase of the cell cycle (the 'M' phase) in which the duplicated chromosomes (during the 'S' phase for synthesis of new genomic DNA) are seperated for each new cell that will divide into the two individual cells to have a copy of genomic DNA.
Mitosis is also characteristic of eukaryotic cells, and not prokaryotic cells (which do not have a nucleus to characterize the major phases of the cell cycle). Prokaryotic cells divide by binary fission, which is their cell division.
Meiosis is another cell division, different than mitosis, in which eukaryotic cells use for sexual reproduction.
Stem cells have an asymmetrical cell division, in which mitosis may or may not be the same (unknown).

What is the G3 stage of the cycle? Is that the same as the quiescent G0 stage? Where the cells are not dividing and just functioning?
kolean
Coral
Coral
 
Posts: 345
Joined: Thu Jun 25, 2009 3:15 am

Re: cell division

Postby Dougalbod » Mon Oct 19, 2009 3:12 pm

bio1618 wrote:Is mitosis the same as cell division?

I want to say yes because mitosis is a type of cell division and when you speak of mitosis, it's usually referred to cell division. However, mitosis doesn't include all of cell division becaue cell division continues all the way through cytokinesis, which is not mitosis. I'm a little confused and cannot give a yes or no to this answer. Please help, thank you.


It's probably easiest to think of mitosis as one form of nuclear division - producing two identical genetic copies (barring mutation). Meiosis is also nuclear division but the daughter cells are not genetically identical.

Cell division (cytokinesis) usually follows mitosis and meiosis.

Dougal
Dougalbod
Garter
Garter
 
Posts: 37
Joined: Wed Oct 07, 2009 8:55 am


Return to Cell Biology

Who is online

Users browsing this forum: No registered users and 2 guests