DNA (deoxyribonucleic acid) is the genetic blueprint that
determines a person's biological characteristics. DNA is located
in every nucleated cell of the human body. Upon conception, a child
inherits one half of his DNA from his mother and one half from his
father.
The
unique combination of DNA, once analyzed, will match that of the
biological parents.
When a child's DNA does not match that of the alleged father, he
is excluded 100% as the biological father of the child. When the
child's DNA does match that of the alleged father, we can prove
a probability of 99% or greater for paternity. To arrive at a probability
of paternity, human cells are first extracted from the tested parties.
In the case of in-home sample collection, cheek cells are collected
from the mouth with a buccal swab. In the laboratory, these cells
are removed from the swab. The DNA from these cells is then extracted,
and cut into sample fragments with enzymes. These fragments are
placed into a gel matrix, where an electric current drives the fragments
across the gel. Later in the process, these fragments are exposed
to a labeled DNA probe.
This probe recognizes and binds to a unique segment of the person's
DNA. Where this probe binds to each person's DNA is the key to
establishing relationships.
A film is developed which will reveal black bands where the probes
bound to each individuals DNA. The pattern of a child is unique
- half matches the mother and half matches the father. If it is
revealed that the band patterns of the alleged tested father DO
NOT match that of the child, that person can be conclusively excluded
as the child's father. If the patterns DO match, the probability
of paternity begins to grow. This entire process is repeated several
times independently. Many different probes, producing many different
band patterns, are revealed. The more probes that are used; the
more definitive the results can be.
DNA testing is very scientific, and, as you have heard, it is very
accurate.
Parentage Testing Laboratory is able
to perform this highly specialized testing at a very affordable
fee because of a highly efficient laboratory. You can rely on your
results from
Parentage Testing Laboratory.
