DNA in blood?

[sinister357]

if dna can be extracted from skin, hair, bodily fluids, saliva ect...why not blood? if anything, you would think it is our "blood" that contains our dna profiles...rig ht? aparently it doesn't...did you know this? i didn't..i've always wondered what happens when you donate blood... will your genes get mixed?

[humpty dumpty]

if dna can be extracted from skin, hair, bodily fluids, saliva ect...why not blood? if anything, you would think it is our "blood" that contains our dna profiles...rig ht? aparently it doesn't...did you know this? i didn't..i've always wondered what happens when you donate blood... will your genes get mixed?

I wouldn't worry about donating blood, I'd worry about an organ transplant, that's when we really have someone else's DNA inside us.

[unknown_soldier]

if dna can be extracted from skin, hair, bodily fluids, saliva ect...why not blood? if anything, you would think it is our "blood" that contains our dna profiles...rig ht? aparently it doesn't...did you know this? i didn't..i've always wondered what happens when you donate blood... will your genes get mixed?

I think the function for RBC is to distribute oxygen, nutrients, and waste(carbon dioxide) in and out of the body. RBC doesn't participate in any production. So DNA is found mainly in WBC because it has to code for receptors for antibodies or production of antibodies which involves in protecting you from outside diseases.

besides that RBC's life span is only 120 days. The spleen screens the RBC and destroys it if there's any defects. therefore, even if you get blood transfusion, the RBC being transfuse only lives up to 120 days.

[Reporter]

if dna can be extracted from skin, hair, bodily fluids, saliva ect...why not blood? if anything, you would think it is our "blood" that contains our dna profiles...rig ht? aparently it doesn't...did you know this? i didn't..i've always wondered what happens when you donate blood... will your genes get mixed?

If the DNA is not in the blood, how can donating blood transfer our identities to someone else?

Oh, whew! good to know that. I donated blood twice back in high school and college. I'm not mixed with anyone then. What a relief!

[SV1985]

One time i was ask to donate blood, I was was on drugs so i told them i didnt want to. lol

[Sentinel_Li]

if dna can be extracted from skin, hair, bodily fluids, saliva ect...why not blood? if anything, you would think it is our "blood" that contains our dna profiles...rig ht? aparently it doesn't...did you know this? i didn't..i've always wondered what happens when you donate blood... will your genes get mixed?

Blood has no nucleus, which contains DNA.  In the process of maturing, the erythrocyte expels their nucleus containing DNA to make room for carrying oxygen.   Hence, blood is typed ABO.  If your type is A, and the donor is also A, then the blood is compatible and you can recieve same typed blood 98% of the time.  There are other differences in 1 to 2% in Rh factors, and allotypes, which when you recieve blood must be carefully determined, or else, you can get an adverse reaction from the transfusion.