Dnatests.org is an online initiative meant to inform about different DNA tests that you can have performed through various websites. The most common DNA tests to be requested are the genealogy and paternity tests. The DNA test that can give you insight into your health and diet is also becoming increasingly popular. A fourth type of test in an examination that allows you to screen yourself or, for instance, an unborn baby, for the likelihood of congenital diseases. But how reliable is all of this? And which test is the best? We have mapped out everything in our comparison table.
Where do your ancestors come from? Find out where to do your ancestry dna test.
A DNA test for insights in your ideal diet. Health tests are getting more populair.
DNA stands for deoxyribonucleic acid and was first discovered in 1953. It’s a molecule in which hereditary information is stored. You can find this molecule in the cells throughout your entire body.
Through a microscope, DNA looks like two twisting strands linked by cross connections in between. In this sense, it looks a bit like a spiral staircase. The cross connections, which are also called base pairs, connect nucleotides that lay across from one another. These can be 4 different types: adenine, thymine, guanine and cytosine. These are also referred to with the letters A, D, T and G. Only AT and GC can form combinations together. The sequence of these Nucleotides along the strands can be composed in many different ways. As a result, something much like a code is readable from DNA.
Because proteins are built based on a ‘reading’ of the DNA code, DNA determines the way the proteins look. In turn, proteins determine the way you will look as a person. They determine the colour of your hair, the colour of your eyes, and so on. DNA, therefore, is what ensures that people are unique.
Chromosomes are built up from DNA, and these chromosomes are encased in the cells of the body. Before the division of a cell takes place, the chromosomes are copied first, after which the new cell follows.
DNA is transferable during procreation. Every cell nucleus houses 46 (23 pairs) chromosomes, of which people inherit 23 from their father, and 23 from their mother.
If you want to learn something about DNA, the following process is basically the same everywhere. You take a sample that contains DNA, on which a test is performed. After a certain period, you’ll receive these results. In practice, a DNA test is made up of the following steps:
Step 1: sending a sample
You receive a package from the party that performs the DNA test, which contains a sterile test tube. You’re supposed to use a cotton bud to fill this test tube with some saliva from your cheek, or you can simply spit some saliva into the tube. As you can see, it isn’t a complicated process. Do take into account that you’re not allowed to eat or drink for X minutes beforehand.
Step 2: Analysis in the lab
The package is received by the laboratory. It occurs quite often that this laboratory is based in the United States, as a result of which it’ll take a bit longer before you receive the test results. Additionally, the actual analysis takes up some time as well. Keep in mind that the total duration can take up to 8 weeks.
Step 3: Test results
When the test results are ready, you’ll receive a notification through regular mail or e-mail. In many cases, you can access the test results online. Especially the DNA test companies that focus on ethnicity and heritage have nice ways of displaying the results.
As DNA tests have gained in popularity rather quickly, there have already appeared quite a lot of good articles in which DNA tests themselves are tested. Below you’ll find a selection of a few of these articles. These give a good general impression as to how you should interpret the results of an ancestry test.