Will dna anncestry prove we are full sisters?

[Scorpion84]

I don't want to go into lots of details as it's outing but essentially my 3 siblings think I have a different dad

I'm extremely confident this isn't the case as I have dna matched with a very distant cousin but this is on my dads side of the family through confirmed with relatives on his side

I have told my siblings this but they don't seem to take this on board .

dna tests are expensive so I was thinking if I upload my sisters dna ( with her permission) will this show we are full siblings if we are ? As does dna anncesty differentiate between full and half siblings ?

If they are uncaring enough to approach such a sensitive subject in this manner then I'm concerned it's more of a bullying tactic than anything else. What happenes when you get the result? Is it going to leave you utterly frustrated if they just shrug and turn away (metaphorically)? They don't sound like the sort of people who would let you have your moment of victory and will probably use it as an opportunity to make you feel worse if they can. Be cautious. If you find out perhaps you and your sister can keep it between you?

First post, second sentence.

And again at 12.05

If your brothers’ theory is based on them looking different maybe they have a different father!

Yes, if the man you knew as your father wasn't in fact your father, the match would be via your mother. If you know this relative was definitely related to your father, that's a clincher.

But do the DNA test all the same. Since you have already identified a relative of your late father through testing, the result should be definitive proof that you are a full sibling, unless your mother and father conspired to bring a child of his who was not your mother's into the family. However, your original birth cert should show your mother's name and would be signed by the hospital registrar. I believe you can find your original BC (not an abstract) via the GRO.

When your mother dies, make sure you have a solicitor representing your interests if there's any inheritance.

This whole business sounds really sinister.

Be on the spot when she does the swab amd accompany her when she posts it, just in case she tries anything funny.

She hasn't done a dna test

She's done a dna match on ancestry and wants to do it for her siblings rather than a specific dna test

I think it might be best just to do a dna test rather than go through ancestry as it will give a firm, indisputable answer to her brothers

Wouldn't that be something!!!

@Trallers

I think you're right .

I need to do it for me .

i considered it a few years ago but decided not as I felt so resentful I've been put in this position

The match I have on my dads side is a half 2nd cousin x1 removed ?

the common ancestor on ancestry with this match is through 2nd great grandmother.

I don't the half 2nd cousin bit ?

It’s not a match that proves what you want. It’s too distant and could be caused by distant ancestors marriages. Eg my parents have this genetic link although they did not grow up anyway near each other. Your current sole DNA match is no proof that your father is your father. You need to do as instructed; get your sister to test.

unless you have any closer DNA matches on your parental side?

@DNAexpert no nothing at the moment .

thank you for replying