Human genetic make-up is the “public” part of the body. The characteristics of DNA (deoxyribonucleic acid)-structure, for each person or family of similar models, which helps the relationship and paternity. DNA retains some of its functions, it goes from one generation to another, while some parts of change. Components, the conditions for assistance with verification of family history. Although it is difficult to specify the exact wording of the genealogical tree of an individual, a DNA test can be conclusive proof, if a person is related to another if the same ancestors, people who trace the same name and in search of ethnic origin.
Autosomal DNA testing
There are three types of tests, which are used to provide information about his parentage –
* Mt or mitochondrial DNA (maternal line)
* Y Chromosome (Paternal Line)
* Autosomal DNA (joint)
The human body is composed of 23 pairs of chromosomes, DNA structures in cells. Of these, 22 are pairs of non-sex chromosomes in the nucleus. The last couple may be an X or a Y chromosome, or a combination of both determines whether the main characteristics are inherited from the mother or father. The other 22 chromosomes are linked to the physical characteristics of a person’s hair, eye color or height. Genetics of a person is determined by a comprehensive analysis of all chromosomes. It is an idea of all the characteristics of an individual, by the parents. Autosomal DNA tests are not the sex of the family of the line concerned. Therefore, it is easier to verify nuclear relations with members of the family as a grandmother, brother or sister.
Applications Autosomal DNA test
Paternity testing is the area where autosomal testing large-scale application. The extended family is also monitored by these tests. The FBI crime database solution contains 14 markers of the implementation of these autosomal tests. This “CODIS” are markers for the crimes in the detection of DNA fingerprints and paternity tests. Mapping biogeographical affiliation is another area of human genetics, where autosomal DNA testing is used. The geographical distribution of the assets of an individual can be determined on the basis of this review. The application of this test is limited because of an error chances are high, even if a rough idea of the family responsible for the examination. The cost of implementing a test basis, autosomal anywhere between $ 200 to $ 300 This test classification percentage in European Americans, sub-Saharan Africa East Asia or genes in a person . The specification of the region can be exactly the territory that we pay more money, but the authenticity can not be guaranteed.
Constraints
The limits of the autosomal DNA test
* You can return early for a few generations, although research to improve its scope is made.
* In the case of brothers and sisters, we can inherit the genetic component is more than the others, for the same parents. For example, a boy of 40% in May inherit African genetic form of her mother and that his sister, he can only 20% of the same mother. Therefore, from the origin can not be established with certainty.
* Fade Autosomal DNA tests in the authenticity of the lineage further, because the DNA that is diluted with each generation. It may, with the mitochondrial or Y chromosome testing with a higher degree of reliability.
It is true that the current state of DNA research is controversial, there is hope that in the future, autosomal tests, we in the depths of the human lineage.