Siblingship DNA Testing
A siblingship DNA Test compares the DNA of one person to that of another to determine the likelihood that they are biologically related as siblings. This is done by calculating the statistical likelihood that the parties share the same two parents, one parent or no parent at all.
In some circumstances, siblingship DNA tests can help identify ‘full’ (sharing both parents), ‘half’ (sharing one parent), or ‘step’ ) no common biological parents) sibling relationship.
What are the two main types of Siblingship DNA tests?
There are 2 types of DNA tests. There is an informational DNA test and a Legal DNA test. An informational siblingship DNA test will provide you knowledge of the relationship between siblings but cannot be used for legal purposes like inheritance, immigration etc. A legal siblingship DNA test will provide you the ability to conduct relationship requirements in the legal system.
How is the Siblingship DNA Test conducted?
A sibling DNA test is a simple procedure that will take the cheek swab from the siblings and if a parent is involved, a cheek swab from the parent is also taken. The addition of a parent makes for a much more accurate outcome of the test. If a father is not present, and the mother is, then the mother’s DNA will be compared to the children’s and the remaining DNA in the children will be the fathers.
There are between 21 – 36 genetic markers that the test will evaluate to find the possible matches of siblings, no matches or half matches.