What do the numbers mean on a DNA test?
The DNA test report you will receive shows numbers (in the first column) that indicate each of the 21 loci involved in the DNA testing process. The columns marked “allele” on the DNA test report contain numbers indicating the two alleles found at each locus (or one number if they are the same size).
What does DYS391 mean on a DNA test?
STR’s occur at specific locations on the y-chromosome, which are often referred to as loci, and are given names such as “DYS391.” STR’s occur when short segments of DNA sequences get repeated over and over along a portion of a chromosome. For example, DYS391 consists of repeats of the base sequence -GATA-.
What chromosome is D3S1358?
D3S1358
| Other Names | Chromosomal Location | GenBank Accession |
|---|---|---|
| UniSTS: 148226 | 3p21.31 Chr 3; 45.557 Mb (May 2004, NCBI build 35) | AC099539 has 16 repeats |
What does PI mean on a DNA test?
Paternity Index
In paternity testing, Paternity Index (PI) is a calculated value generated for a single genetic marker or locus (chromosomal location or site of DNA sequence of interest) and is associated with the statistical strength or weight of that locus in favor of or against parentage given the phenotypes of the tested …
What does D10S1248 mean on a DNA test?
Genetic variation at 5 new autosomal short tandem repeat markers (D10S1248, D22S1045, D2S441, D1S1656, D12S391) in a population-based sample from Maghreb region.
How many DNA markers are used in paternity test?
The same set of markers is used in paternity tests and our DNA Fingerprint Test. The 13 standard or core CODIS markers (14, in addition to AMEL, which shows sex) are:
How many STR markers are in a DNA test?
Each individual has two copies of each STR marker, known as alleles: one is inherited from the father and the other from the mother. Which DNA STR markers are examined? AlphaBiolabs tests up to 35 STR markers including two sex markers as standard. These are:
How is the direct index of a DNA test calculated?
A “relationship index” (called the “Direct Index” in the report) for each locus is calculated based on information including the portion of the male population that has the obligate paternal allele at that locus. This index is reported for each DNA locus.
How does DDC test for paternity of children?
DDC’s laboratory tests at least 20 different locations on your DNA, as listed in the “locus” column, and compares them with the same locations on the other tested parties. Each child inherits one copy of this DNA segment from the mother, and one copy from the father. These DNA segments are called “alleles”.