paternityexpress.com

When a father is available for sampling the usual DNA Paternity test may be performed.  However when a father is deceased or otherwise not available for testing, a DNA Grand-Parentage Test may be performed using the father’s parents to establish the child’s paternity.  This test will determine whether the tested couple’s child fathered the tested child by establishing biological relationship between the child and the alleged grandparents

For the grandparent’s test the child’s DNA profile is compared with the DNA profiles of the alleged father’s biological parents.  Because a child gets half of his or her DNA from its mother and half from its father, the paternal half should match the DNA passed from the alleged grandparents to their child and thus to the tested child.  The fastest analysis may be performed when the child’s mother participates in the testing; however, a motherless grandparentage test (does not include the child’s actual mother) takes a longer time to process as extended testing becomes necessary.

A grandparentage test may be need to establish biological relationship in some immigration cases, to establish Social Security benefits and in claims of inheritance matters.  The maternity DNA test as well as the paternity DNA test is also fast becoming the norm in immigration cases that claim a biological relationship.  For nearly every purpose, there is a DNA test which may be done to prove or disprove a point, see some of the other DNA tests that the technology now offers.

Genetic reconstruction is used to determine if a child is related to an alleged father by using two or more of the alleged father’s relatives in the comparison.  A series of DNA tests are conducted in order to make this determination.  It is an indirect way to determine relationship when the alleged father is unavailable to donate his own samples for testing.  Results from generic reconstruction DNA testing can be used in many ways, most prominent of which is proof of Social Security benefits, inheritance claims, and other trust and estates matters.

How is this achieved?

The child’s DNA profile is compared with the family members DNA profiles.  The relatives should be close blood relatives of the alleged father (e.g., brother, sister, mother or father of the alleged father).  For genetic reconstruction, although every person’s DNA profile is unique, close relations will share major similarities of their DNA profiles because DNA is hereditary.  Because reconstruction is complex, the mother of the child is required to participate in the testing.  If she is not available to give her sample, then three or more of the alleged father’s close relatives should participate.  Genetic reconstruction is another way to achieve paternity testing; therefore, avuncular testing and grandparentage testing all fall under the genetic reconstruction umbrella.