It's that part of the crime show you've waited all hour to see. That moment when the police officer or CSI tells the perp, “open up” as he or she then takes a cotton swab and takes a sample of the DNA from inside the perp's cheek. You smile with satisfaction because you know the DNA will prove the perp did it.
Ah, DNA – it's making crime shows much more riveting now. How did Perry Mason ever win a case without it?
Of course, DNA isn't just for crime shows anymore. Now the average Joe and Jane can order DNA home kits, open up and swab their own DNA cells to be analyzed. Why would someone go to the expense of having their own DNA analyzed?
Paternity Testing
Today many men are having their DNA tested to prove paternity, that is, whether or not they are the father of a particular child. This is often used in child custody cases, where the father believes himself to be the father and wants visitation rights. To be legally admissible in court, however, the test must be performed by a certified testing facility, accredited by the American Association of Blood Banks (AABB).
While DNA testing for paternity is a simple test, what isn't simple are the ramifications of such testing, particularly for a child who is being raised by, and considers another man “father.” Before undertaking such tests, a man should consider how a determination of paternity or exclusion will affect himself and the child.
Immigration
DNA testing is also being used to prove relationships in immigration cases. That's because U.S. citizens can petition that spouses, parents, children and siblings be allowed to immigrate to the U.S. Green card holders are also allowed to do the same for spouses and unmarried children. Normally the applicants use birth certificates, marriage documents, and medical and school records to provide that proof of relationship. However, if these documents are missing, or fraud is suspected, the Citizenship and Immigration Services may require a DNA test. Again, one should make sure that the testing facility is accredited by the AABB.
Genealogy Research
Many people have turned to DNA tests to determine from where their ancestors originated. Two types of DNA testing are Y chromosome testing (Y-DNA) and mitochondrial DNA testing. The Y –DNA tests look at paternal lineage while the mitochondrial DNA looks at maternal lineage.
Such tests can be used to determine such things as: which present-day African country you share your ancestry; which European maternal clan you share ancestry; percentage of Native American ancestry. These tests can be performed using at-home DNA kits.
Again, before undertaking any DNA testing be sure you weigh any ramifications of the test results.
Dna Testing For Genealogy
DNA testing and the whole process that goes with it can be confusing for anyone, particularly if you're never experienced the process before. It is packed full of complicated scientific jargon that makes very little sense to most people and requires an knowledge of genetics to even remotely comprehend. Luckily, we've compiled this basic list of DNA testing definitions to help keep you on track throughout it all:
DNA: Deoxyribonucleic acid, or DNA, is the acid within each and every one of our cells detailing everything about the way in which our bodies will function and appear. Think of DNA as the plans to your body - the blueprint to how you're going to work. Inherited in equal measure from both the mother and the father, no two persons' DNA is alike, making it ideal for identifying criminals from crime scene DNA evidence and for determining paternity in contentious situations.
Avuncular Test: The testing of the alleged father's relatives alongside the sample from the child in question in determining paternity. This can be used where the father is not present or not available to give a sample for DNA testing, and can help determine (albeit with lesser accuracy) whether or not particular samples are genetically related. It is nevertheless desirable to conduct all DNA testing with the father having previously been sampled to ensure more accurate results.
Paternity Test: The most common form of DNA testing, paternity testing, establishes whether or not an alleged father does indeed share a genetic relationship with the child in question. By matching up the DNA of the mother, the father and the child in question it is possible to identify parentage by looking for a 50/50 split in genetic material from both parents.
Oral Swab: The most effective and easiest way of collecting a DNA sample. Achieved by simply scraping the swab against the inside of the cheek in order to glean genetic material from the cells of the cheeks, before being sealed and sent off to the lab for testing at which point it can be matched with additional samples from the other parties involved. Oral swabs are preferred to other samples because they are comparatively easier to read and compare.
Chromosome: The location of the genetic material (that is to say, the DNA) within each cell, in which there are 23 pairs of chromosomes in total. The male chromosomal partnership is identified as X and Y, whereas females do not possess this distinct Y chromosome. Therefore it is possible to test male relationships of a genetic nature through the Y chromosome which in itself very infrequently mutates as it is passed between father and son.
DNA Testing: The overall process by which DNA samples are compared in order to identify a particular individual in criminal, medical or legal circumstances, or purely out of curiosity. DNA testing can be used to determine paternity, or place a crime suspect at the murder scene, and has been proven to be highly effective in boosting conviction rates for serious criminal offences.
Both Shari Hearn & Kevin Camilleri are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
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