Paternity testing/DNA??

Question

Here's the scenario: 40 year old woman finds out that her Dad may not actually be her biological Dad. He has unfortanetly, passed on. How can she find out? She does have siblings. In other words, how does she go about taking a paternity test her Dad is already gone? Thanks.

I meant to say, how can she find out IF her Dad is already gone.

What would the Mother have to do with it? We're talking about the father here. And yes, their are 2 siblings, 1 would cooperate, no problem and the other, not sure.

Answer 1

Isn't DNA testing expensive, I don't now. What I am saying here, is, does it really make that much difference. Did you love your dad regardless if he was your real father or not. What if you did find out he was not, and found your real dad, and he was an arrogant bum. This is the chance you take. Doesn't you Mom know? Do you look like your siblings? I think surely your Mother knows. Good luck. Are you the oldest? If you have to know, just do what the rest here are saying, all good ideas. I say, just leave it alone, and forget it. You might not like what you find. . .and it is too late, really.

Answer 2

If her mother is alive and she can be sure that her siblings are the children of the putative father then it is relatively simple to do a genetic comparison between them to determine if they share a common father.

Of course she needs the co-operationof her siblings and her mother. And these sorts of tests aren't as defintive as a direct paternity test, particularly if the alternative father is close relative of the putative father. But she could get a result with a probability of 90% or better from themother and one sibling, and increasingly bigger probailities with more siblings.

EDIT

>>>What would the Mother have to do with it? We're talking
>>> about the father here.

Everyone receives half of their genome from each parent. In this case one parent is not present so the easiest way to determine with any certainty what the paternal genome is is to subtract the mother. However to do that you need to know what the mother's genetics are.

Basically you are removing all the bits that you can determine you didn't inherit from your mother, and whatever is left must be form your father. If those remaining bits match your siblings then you share the same father. But you need to know which bits to subtract.

There are other ways to do this if your mother own;t agree, but to give reliable results you need to have a lot of the putative father's relatives to sample from. Without your mother's input you need to compare the sequences to multiple relatives and see whether you can find a match. If there is any possibility that the biological father is a blood relative of the putative father it becomes much more complicated if the maternal material can't be eliminated.

Answer 3

Interesting question.

The answer about finding a close relative (ie brother or sister) of the dad would be a good place to start.

Comparing all three siblings'(you and your two sibs) DNA would tell you whether or not you were all fathered by the same man. Being reasonably sure of their paternity would indirectly confirm your own.

Answer 4

if her "dad" has any surviving relatives such as brothers or sisters, other children or anyone of 1st degree relation, then she can get a genetic test done with one of his family members and compare it to hers.

in extreme cases, or if she has lots of money, she could even get his body unearthed and they can take samples from his body. but they only do that if you are loaded and can pay big bucks or if it is related to a major crime...

Answer 5

The most sensible advice has been given by 'shardf'.

Take it

Answer 6

If this man who died, raised her, and took care of her then he was her real father.

Answer 7

by there blood type