Complex Relationship Testing
The need to perform a complex DNA relationship test arises most often in matters of child support and child custody or for immigration purposes when:
Either a child's alleged father is unavailable for paternity testing and the father's relatives are available. Or if both the biological parents of the child are deceased or missing and a biological relative wishes to apply for custody of the child.
Since a child inherits half their DNA form each of their biological parents, we can trace certain markers to relatives of the biological parents to determine if they contributed DNA to the child's genetic profile (presumably through the missing or deceased alleged parent(s).)
Complex relationship tests include:
Avuncular
An Avuncular test can determine whether or not there is a biological relationship between a child and a sibling of either of the parents.
Siblingship Test
Full Siblingship Test: - can help two individuals verify whether they are full or half siblings. Half Siblingship Test: - can help verify two alleged siblings that do not have the same biological mother but suspect they may have the same biological father
1st Cousin Analysis
A 1st Cousinship test can determine whether or not there is a biological relationship between a child and a child of a sibling of either of the parents.
Grandparentage Test
A grandparentage test can determine whether or not there is a biological relationship between a child and a set of grandparents.
Y Chromosome Test
The Y chromosome test can be used to determine paternity in the absence of the alleged father. Y chromosome has a patriarchal mode of inheritance and barring mutations it will be identical in all males in the family who have common male ancestor. In the absence of alleged father's DNA sample it is possible to compare Y Chromosomes between the child and the alleged paternal grandfather or alleged paternal uncle. If DNA markers on both chromosomes show an identical match then the child inherited this chromosome from the missing father.
Mitochondrial DNA test
Mitochondrial DNA has a matriarchal mode of inheritance and can show whether two or more individuals could share a common maternal ancestor. This test is predominantly used for cases where direct maternal lineage needs to be confirmed (e.g. maternity when mother's DNA is not available) or for when identifying victims of catastrophes in cases where it is impossible to obtain good quality genomic DNA for example the identification of the 9/11 victims.
For more information and/or to discuss your case in confidence, then please contact our friendly and professional customer service team on 08450 505590 or via email (enquiries@screensafeuk.co.uk).
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