If a grandpa is a father of his grandkid (rape his old daughter), will DNA can proof that? And how the result will be like? ?

So there is a news that there is a 12 years old girl, she was raped by someone she didn’t get a chance to really see his face, happened at night outside in her house area in suburbs, she do believe her mom and dad were in the house when she got raped.

The dna result said her own father is the raper( testing grandpa and the baby of his own daughter who was 12 years old at the time. ) 

I am so confused since 50% of 12 years old girl would come from her dad. So when 50% of her dna passed on to the baby that belong to raper could possible have up to 50% match with her dad even if her dad didn’t be the raper (random 50% of her genes and 50% genes came from her dad, in case all the random genes from her to baby just originally came from her dad; even thought there is very chance for this:::: in the other side it could tiny chance that 50% of 12 girls that passed on to her baby that born by taper could all originally came from her mom; the grandma of the baby). 

So if DNA test could proof Dad rape that daughter result she has that baby. How many percent is the standard to proof that.

Update:

Dad denied he didn’t rape.

Mom believe dad.

Daughter 12 years couldn’t recognize or get chance to see the raper.

Thing happened too long no one can proof dad and mom were in the house.

The 12 years old was playing her cellphone at the time she got attacked.

Update 2:

Sorry couldn’t change his old daughter to his own daughter.

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3 Answers

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  • 2 months ago

    A sample of his DNA would be looked at. Yes, they can prove it.

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  • Zirp
    Lv 7
    2 months ago

    If dad is innocent, his grandchild should have about 11 or 12 of his chromosomes  (people who don't know genetics would call it "sharing 25%")

    If dad is guilty, it will be closer to 34-35 ("sharing 75%")

    If dad is innocent and the child is a boy, comparing the Y-chromosomes could be enough to prove innocence - unless some male familymember of dad did it

    Your details starting with "I am so confused" are utterly unintelligible

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  • 2 months ago

    It is a little hard to understand what you are asking. But if they found any trace of the father's DNA, it would be 100% his DNA.

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