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What is a Locus
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Locus (plural: loci) is a term used for the DNA markers that are tested and reported on your DNA Testing results. On each report there are generally sixteen markers displayed, fifteen of which are used to help determine your DNA Test results. The names of these loci are listed on the report. An example of one is D2S1338. Each person has two genes at each marker. On your DNA Test result you will sometimes note that there is only one number listed. This means that at this marker a person has two of the same. For example, if at the D2S1338 a person has two 8s the report will only show that gene once.
In the case of a DNA Paternity Test, the alleged father must match at least one of these numbers at each of the fifteen markers. Without matches at each position he may be excluded as the biological father of the child. Having the biological mother included with each DNA test will strengthen the results of your test.
The last marker on a DNA Test is the AMEL (short for amelogenin) gene. This is the gene that indicates a person gender. This is not generally related to the actual results of a DNA Test.
Read More Recombinant DNA
Recombinant DNA (or rDNA) is made by combining DNA from two or more sources. In practice, the process often involves combining the DNA of different organisms. The process depends on the ability of cut, and re-join, DNA molecules at points identified by specific sequences of nucleotide bases called restriction sites. DNA fragments are cut out of their normal position in the chromosome using restriction enzymes (also called restriction endonucleases) and then inserted into other chromosomes or DNA molecules using enzymes called ligases., tablet or desktop. This ensures a consistent, and easy to maintain, appearance for your site.
