Blood question?

Question

If person A donates person B their blood, does it mean that person B has person A's DNA in their body? Like if person B got tested, would it be possible that person A's DNA showed up?

Answer 1

Yes and no.

Blood has three main parts: plasma, red blood cells, and white blood cells. Plasma is not alive - it is a lot like a sports drink with a bunch of hormones, antibodies, and other proteins mixed in. Red blood cells are alive, but they are not complete cells... when they turn into what they are, they eject a lot of their insides, including the nucleus. So there is no DNA in a red blood cell.

That just leaves the smallest part, the white blood cells, which make up only about 1% of your blood volume. These guys DO have DNA in them. But because they also try to attack anything that seems foreign, they are usually filtered out when you receive blood in a hospital or something - they would just cause trouble if they were put inside a different person.

So if you got a blood donation from someone else, ideally there will be NONE of the other person's DNA in you. There may be one or two white blood cells that managed to sneak through a filter, but that amount is not going to show up on a test to any appreciable degree. Not to mention that most DNA tests prefer to use skin cells instead of blood, so even if all your blood was replaced with unfiltered stuff, it wouldn't likely show up even then to a great degree.

Answer 2

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Answer 3

Only at first. Blood cells are renewed and as time goes by, would be gone from the body. And unless a crime was commited, DNA would not be checked.

Answer 4

the simplest reason why it would be no is because red blood cells dont have a nucleus, so no DNA...

Answer 5

No
Blood is like this
if U have
a Blood A
you have Aglutinogen A and agulutinine B
so it is not DNA
if U have blood type O
you have aglutinogen O and agulutinine ab
and so on so forth

Answer 6

http://nobelprize.org/educational_games/medicine/landsteiner/readmore.html

This website should help you it has info on blood transfusions and other things like that

Happy Thanksgiving

Answer 7

i think no! DNA is going by sperm not by blood:))

Answer 8

ofcource yes...

Answer 9

No.