DNA Sibling Tests and Family Genealogy
A DNA sibling test can be used to conclusively determine the probability of two persons having the same common parents, ancestry and genealogy.
This is mostly likely useful in scenarios in which the targeted parents are either unwilling or perhaps unable to participate in a DNA paternity test.
If it is possible that either of the possible parents are available, a desired option would be to conduct a comparision using a DNA test. This may not always be convenient or inviting to those involved.
A DNA sibling testing can be used to decide the likelihood of two or more individuals being full siblings, half siblings or sharing no biological relationship; effectively meaning that they are not related.
Full siblings have two biological parents in common (a mother and father), whereas half siblings have only one parent in common (either the mother or the father).
DNA Biological Relationships
The DNA Sibling test is conducted by examining the number of shared genetic markers between the individuals tested and strives to determine the probability of a biological relationship existing between these people.
The goal of this test is therefore to analyse the degree of shared DNA and to apply statistical analytical methods in order to determine a possible biological relationship.
The greater the likelihood of the common DNA provided indicates a higher probability of a possible biological relationship.
It is suggested that any and all common and not so common family and related persons participate in addressing paternity and DNA confirmation. Physically, this is at best easy, but emotionally and psychologically, it may be quite difficult.