How is CMD different from an ancestry test

Genetic markers used to determine ancestry occur in different forms. Some genetic markers can establish maternal mitochondrial DNA) or paternity (Y-Chromosome) lineage where there is an unbroken chain in the pedigree. Such markers are valuable in resolving ancestry issues, but any break in the pedigree can cause difficulties. For example, the Y Chromosome is inherited from father to son. Any generation where there are no male offspring, the Y Chromosome is not passed on. Likewise, the mitochondria is inherited from mother to offspring. Any generation where there are no female offspring, the mitochondria are not passed on.

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Interested in the science behind the country connection

The country match is determined using a population genetics equation known as the Hardy-Weinberg (HW) equation. It is used to calculate the frequency of occurrence of your genotype (genes present at a locus) with databases from different populations. As an example, data from four populations for the D2S1338 locus are shown. All four of the populations have alleles 15 through 25 in their database, but the frequency of occurrence of each allele differs among the populations. For example, allele 16 occurs at a frequency of 21.52% in population 1, 19.08% in population 2, 28.90% in population 3, and 9.23% in population 4. These are typical of the allele frequency differences detected among populations. See the attached Chart. (Note: the allele frequencies in a population should add up to 1.00 (100%). In this example they do not because there are minor alleles below 15 and above 25 that are not included in this example.) Микрозаймы в Липецке заявка на кредит Липецк

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