Friend has a question about blood transfusion's.?

Question

Say you had a complete blood transfusion (maybe more the once?). Would your DNA still match that of your familys DNA line?

Reason for asking is, one of my friends cousins really likes him (and he likes her), but they are 1st cousins and have read that because of the family bloodline and the DNA being so close if they had a child it would have a high risk of being deformed.

Anyways i told him i would ask, so if you went through a complete blood transfusion (or more then once) would it be the same as the familys still?

[edit]
wow, got answers fast ^_^. Thanks for all the fast answers, I thought it worked something like that but wasn't sure. Guess if my friend and his cousin has a retarded kid together thats there problem (they just better not ask me to baby sit!).

Thanks again :).

Answer 1

This is a myth, the part about 1st cousins having deformed babies. The truth is that, although it might be a little weird for most people, there's no more of a risk than anyone else. It's even legal in some places to marry your 1st cousin. So, although they can't get blood transfusions to change your DNA, they can have kids and most likely they won't have 2 heads, 3 eyes or extra limbs.

Answer 2

What a great question! It's kind of like that man who had the hand transplant about a year ago. It never even occured to me that he is walking around with one set of someone elses fingerprints. But as far as blood transfusions confering the genetic identity of the donor to the recipient, it is not possible. Blood has three components, reb blood cells, white blood cells, and the fluid they are in called plasma. Simple blood transfusions deliver only red blood cells and plasma. The only job of a red blood cell is to delivery oxygen to all the tissues of the body. Transfusions are given to replace lost blood and plasma during surgery or some trauma so that the body can still deliver enough oxygen to the tissues. What is important about this is that red blood cells contain no nucleus, and therefore no individual genetic material. Why not give the white blood cells as well? White blood cells have too many cell surface proteins that would indentify them as "foreign" to our body, thereby causing the immune system to destroy them. Red blood cells contain only two types of cells surface markers, the A,B,O and Rh factors. When you get a transfusion, the doctors either give you the same blood type that you already have, or type O. Why type O? Well the short answer is that type O is the universal donor. This is because no one makes antibodies to the O cell surface receptor as everyone has this receptor. The AB type is the universal acceptor because people with this bloo type don't make antibodies to any of the blood groups. Rh factor works kind of the same way. I'll leave that up to you to investigate further.

Answer 3

Yes, the DNA doesn't change because of a blood transfusion even a complete one. The blood put into a body by transfusion doesnt last forever, it's merely a booster until the body can replinish the cells on it's own. These cells would of course match her DNA because her own body made them. Even so, different blood DNA would not affect her eggs causing them to be different DNA than they were before.

Answer 4

Your dna will never ever ever ever change no matter what I promise.

Answer 5

friend