No disease involved.
You get half of your DNA from each parent, but each parent is only supplying half of their DNA, and it's not the same pieces every time.
There is no guarantee that siblings get the same pieces, unless they are identical twins.
2006-08-17 16:21:15
·
answer #1
·
answered by Computer Guy 7
·
1⤊
0⤋
Adequate DNA is packaged up into chromosomes. People have 23 chromosomes, but there are 2 types of each one. One variant comes from your mom, one out of your father. Your moms and dads have 2 of each and every chromosome as well, however they just gave you one each and every (so you've gotten 2 no longer 4). So you might have one from your mum and one from your dad so there are 4 extraordinary mixtures of chromosomes you could potentially have. On prime of this, when sperm and eggs are being fashioned, and the DNA packaged up, there are some bits which get randomly swapped around just a little or modified, so yes each sperm is extraordinary. Then you could have 2 of each and every gene, however relying which one it is only one among them perhaps "used" or it might be a combo of both. This helps make you much more unique from any siblings. So all siblings are one-of-a-kind (except same twins) seeing that the DNA in each sperm and egg is fairly distinct.
2016-08-09 11:45:58
·
answer #2
·
answered by muzzillo 2
·
0⤊
0⤋
It is not because of a disease. Here's how it could happen.
One parent has B positive blood. The other parent has A Positive.
The child is B positive. The parent with type A blood couldn't donate.
And the sibling is A positive. The sibling couldn't donate.
Rh factor could be a problem'
There are other tissue type issues that could affect donor suitablity.
Many times you'll see pleas on the news for donors. None of the patients family members were suitable and the search has to go out into the community.
Answerer # 5, you are thinking of Chimera or Mosaic
2006-08-17 16:24:42
·
answer #3
·
answered by WhatAmI? 7
·
2⤊
0⤋
children only get random pieces of dna from each parent, making up their own. therefore siblings do not share dna unless they are identical twins and if the siblings were not, there would be no reason for there to be identical dna, so infact there is no disease that makes it so
2006-08-17 16:28:24
·
answer #4
·
answered by jme_lynn34 2
·
2⤊
0⤋
I just heard of a mother who didn't have the same DNA as her children. They figured that she was her own twin. She was one of two fraternal twins who, early on, merged into one fetus, but the twin lived on microscopically in the DNA. I don't remember what it's called and I'm not sure you're talking about the same thing.
2006-08-17 16:20:40
·
answer #5
·
answered by Anonymous
·
2⤊
0⤋
Well you only get half of your parents dna so your siblings will always have different Dna that you do.
2006-08-17 16:19:00
·
answer #6
·
answered by amalyn 2
·
0⤊
0⤋
everyone has different DNA except identical twins
2006-08-17 16:19:01
·
answer #7
·
answered by ? 7
·
2⤊
0⤋
Could be rH incompatibility. Could be chimerism. Could just be that mom had an affair.
2006-08-17 16:18:59
·
answer #8
·
answered by The Apple Chick 7
·
2⤊
0⤋
adultry,milkman,affair
2006-08-17 16:19:06
·
answer #9
·
answered by psycoholicwood 2
·
0⤊
1⤋