good question

[mdsquared]

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This might be a weird question but does blood contain DNA? And if it does and a person gets a blood transfusion won't the DNA of the donor's blood be in the blood that the person is receiving? So if that person goes and kills someone, leaves some blood at the scene, and then that blood is tested to to match the person's DNA, which DNA will come up?

If this is a really stupid question I'm really sorry, but I was drunk the other night and this popped up into my head.

 

[MoosePilot]

Good night. Answer your own question. Where is DNA found? In cells. Where in cells? In the nucleus. Which blood cells have nuclei?

 

[NubianPrincess]

April MCAT. Nuff said.

 

[Fermata]

April MCAT. Nuff said.

I say a little prayer for you.

For ever and ever.....

 

[NubianPrincess]

I say a little prayer for you.

For ever and ever.....

I will never forget

But I probably should sleep 😀

 

[Assembler]

You think about bio when you're drunk?!!!! Wow. That's some real dedication right there.

MoosePilot answered your question, indirectly. Erythrocytes/mature blood cells lose their nuclei, so they don't contain any DNA. I forgot though; white blood cells apparently do retain it for purposes of immune defense. Interesting to think about.

My advice to you is to drink stronger liquor next time, though...

 

[IndyZX]

April MCAT. Nuff said.

🙂 that was funny.

to the OP: the answer is yes. theyd have your dna and might be able to match it. rbcs dont have dna in them, since they are denucleated, but wbcs do have dna since they do have a nucleus.

 

[vinoyp]

🙂 that was funny.

to the OP: the answer is yes. theyd have your dna and might be able to match it. rbcs dont have dna in them, since they are denucleated, but wbcs do have dna since they do have a nucleus.

Yes, but blood donations these days are first separated for components. Blood transfusions are then done for the components needed. I don't think WBCs are typically transfused.

So, no... it'd just be the killer's DNA.

--Vinoy

 

[IndyZX]

Yes, but blood donations these days are first separated for components. Blood transfusions are then done for the components needed. I don't think WBCs are typically transfused.

So, no... it'd just be the killer's DNA.

--Vinoy

Well played, Mr. Peanut... but obviously I was assuming that this transfusion was done in the 60s. Did you ever think about that? 😉

 

[vinoyp]

Well played, Mr. Peanut... but obviously I was assuming that this transfusion was done in the 60s. Did you ever think about that? 😉

Touche!

 

[rockstar2525]

When forensics come onto a crime scene they test for blood TYPE, only so they can rule people out, not so they can match DNA. The DNA testing comes from hair and skin samples, right?

 

[MEG@COOL]

When forensics come onto a crime scene they test for blood TYPE, only so they can rule people out, not so they can match DNA. The DNA testing comes from hair and skin samples, right?

And mansauce.

 

[Pinkertinkle]

What about reticulocytes?

 

[Darko]

So if that person goes and kills someone, leaves some blood at the scene, and then that blood is tested to to match the person's DNA, which DNA will come up?

...but I was drunk the other night and this popped up into my head.

Why, were you thinking about pulling an OJ? 🙂

 

[Brickhouse]

April MCAT. Nuff said.

To the OP - your friendly SDN Kaplan Bio teacher representative is very diasppointed in you.

Just kidding, keep drinking.

Vinoy you're hysterical.

 

[mr. sparkle]

they use mtDNA most of the time, so it'd be mitochondria not the nucleus...