Sorry … how can you determine the genetics of a child … apart from a DNA test? Can you confirm that the same blood type is your biological child … accept kasij
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To find out whether someone is a biological child or not, a very accurate examination is done by conducting genetic tests or DNA tests. This examination will match the DNA of a child with DNA that is owned by the father or mother. If you get a mismatch, you can be sure that the child is not your child. Usually samples will be taken from the child and both parents. Samples can be blood, hair, saliva, nails, etc.
Another test that can be done is a blood group test. But this test cannot 100% prove that a child is a natural child or not, we are just guessing. It could be that the result is the same coincidence. So that it needs further examination with DNA tests which are very proven to be accurate.
If you intend to do a DNA test, don't forget to consult with your doctor or geneticist first, to discuss the benefits, risks and what the test means for you and your family.
Thank you, hope it helps.