November 27, 2006 at 7:17 pm #6427TrishntoniaParticipant
What part of blood is used for DNA analysis and why?
Thanks a bunch!!
November 27, 2006 at 7:25 pm #61248rob3Participant
The white blood cells, red blood cells contain no DNA so cannot be used for sequencing; white blood cells do and can.
December 18, 2006 at 4:45 am #63156VibrioParticipant
I thought all cells contained DNA. Otherwise how could they replicate? Or do white blood cells turn to red when they age?
December 18, 2006 at 5:34 pm #63224quote Vibrio:
RBC do not contain DNA, and Do not replicate.
WBC are differant than those of RBC… 🙄
December 18, 2006 at 8:32 pm #63234OscerotParticipantquote sachin_at_biog:
He was told that already. He was asking how red blood cells are created if they don’t contain DNA.
December 18, 2006 at 11:45 pm #63261quote Oscerot:
..wow! easy man… be nice!
December 18, 2006 at 11:46 pm #63262
To further clarify. MATURE human RBC’s don’t have a nucleus (thus, they do not contain DNA.
However, immature RBC (in the bone marrow) are nucleated.. but somehow ‘lose’ their nucleus upon maturation.
But, I believe bird RBC are nucleated (they contain DNA).
Hope this helps!
December 18, 2006 at 11:55 pm #63264VibrioParticipantquote :
Yeah, I kinda knew that since like 2nd grade. so you don’t have to roll your eyes at me!!
Thanks LilKim. I had forgotten that they come from bone marrow.
I did not think RBC and WBC were the same thing, I was wondering if maybe WBC turned into RBC after a period of time, but now I see they don’t.
December 19, 2006 at 5:36 am #63296
December 19, 2006 at 4:05 pm #63331ninadParticipant
I think the chorosomes and some kinda cells are used
January 1, 2007 at 9:17 pm #64425
well, i guess something’s wrong.
i thought only mitochondria and plastids contain DNA,in eukaryotes.all the DNA is contained in nuclues?
January 2, 2007 at 3:38 am #64433
both mitochondria and nuclei contain DNA…. mitochondrial DNA encodes most of the genes necessary for mitochondrial function (mitochondria also have ribosomes) Learn more here: http://en.wikipedia.org/wiki/Mitochondria
The cell nucleus contains DNA encoding all of the other genes necessary to make the cell a functional,living entity… additionally, the nucleus encodes a few gene necessary for mitochondrial function.
January 2, 2007 at 3:39 am #64434
January 2, 2007 at 5:13 am #64443
but do RBC or WBC contain DNA? do they? they dont even have nuclues?
January 2, 2007 at 5:54 pm #64476PoisonParticipant
RBC loses when become mature. WBC have.
January 2, 2007 at 6:01 pm #64479quote Poison:
January 2, 2007 at 6:04 pm #64481PoisonParticipant
read the post before mine. Nucleus I mean.
January 2, 2007 at 6:16 pm #64485quote Poison:
Thank you for that. 🙂 ….. I know that 🙂
Short massage….. May be difficult for others to understand………
so I did that…… request to "Explain here after.." 😛
January 5, 2007 at 3:07 am #64633adamMV07Participant
nerve and muscle cells are the only cells that do not divide if that helps the topic at all…
January 5, 2007 at 5:30 am #64652quote adamMV07:
dont they divide? how can they get replaced
January 5, 2007 at 2:13 pm #64668quote chenwithasterisk:
Refr my post; viewtopic.php?t=8986
May 17, 2012 at 1:05 pm #111138IceIcebabyParticipantquote Vibrio:
Immature red blood cells each contain a nucleus, containing DNA. However, upon maturation they then lose their nuclei (due to certain proteins disposing of it), with this they lose their DNA. They do this to make more room for carrying oxygen and also making them flexible enough to pass through tight capillaries. Red cells don’t replicate either, they are formed from stem cells in the bone marrow and differentiate into red blood cells, going through phases such as the nucleated immature cell. White blood cells contain DNA as they have a nucleus and also form from progenitor cells and differentiate into certain blood cells.
Hope this helps. x
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