Likewise, the Mitochondrial DNA Test can also be used to test a more distant relationship, as long as the alleged relationship follows the mitochondrial DNA inheritance.
It is important to bear in mind that this test cannot pinpoint the exact relationship between those tested, as all individuals in that same family line will have the same mitochondrial DNA.
Mitochondrial DNA can be found in the eggs, which means that all descendants of a woman will inherit this same DNA sequence. Even though men have mitochondrial DNA, they do not pass it to their descendants.
All daughters of the same mother will also pass that same mitochondrial DNA sequence to their descendants, while the sons of the same mother will not pass it to their children.
Therefore, the Mitochondrial DNA Test is an accurate analysis to verify relationships that allegedly follow that same maternal line.
The analysis of mitochondrial DNA is also used nowadays by forensic laboratories to identify bone remains found on war areas by comparing them with possible alive relatives.
Cells contain two types of DNA:
Nuclear DNA is inside the nucleus of the cell, and contains all the genes that make us who we are. Nuclear DNA is the one used by the police to obtain the genetic profile of an individual, and it is also the one used in paternity tests.
Mitochondrial DNA is a circular chain of DNA inside an organelle called mitochondria, which takes care of producing energy for the cell.
Sperms have mitochondrial DNA in their tail, but not in their head. During fertilisation, only the head of the sperm enters the egg, while the tail separates and falls off. Therefore, embryos receive only the mitochondrial DNA from the mother (as it is in the egg), but not from the father.
Hence, the Mitochondrial DNA Test can only be used to verify relationships that follow the same maternal line. For example, if we analyse the mitochondrial DNA of two alleged siblings, we can determine whether or not they share the same maternal line.
The price indicated above is the final price for the analysis of 2 people with standard samples.
If you are unsure about whether this test is the best testing option for your case, please contact us. Please remember that, if there is a blood relationship between the fathers/mothers, this analysis may not be the adequate procedure for you; please, contact us before ordering your kit.
We can test other types of biological samples if you cannot send a mouth swab. Send us an email requesing a list of the non-standard samples we currently accept.
If you are in a big hurry, and can't wait for the kit to be mailed to you, you can download the paperwork for your DNA test. Fill in the forms and mail in samples taken by a cotton bud.