Quote:
Originally Posted by Carl Corey
DNA tests measure your Y haplogroup objectively and accurately. Other results, such as racial admixture, are partially guess work.
Unlikely that as many people are I2b as claimed as it's relatively rare. So the poll results are useless.
As the Y chromosome is the most relevant chromosome it's important to know if you're serious about race.
|
Your Y-chromosome represents the DNA of your father, paternal grandfather, and so on up the paternal line. Y-chromosome results are generally identical throughout the paternal line and are passed from father to son.
If your paternal line came from Europe you usually have an European Y haplogroup even if you are not White.
Quote:
Y-chromosome lineages in Cabo Verde Islands witness the diverse geographic origin of its first male settlers.
The Y-chromosome haplogroup composition of the population of the Cabo Verde Archipelago was profiled by using 32 single-nucleotide polymorphism markers and compared with potential source populations from Iberia, west Africa, and the Middle East. According to the traditional view, the major proportion of the founding population of Cabo Verde was of west African ancestry with the addition of a minor fraction of male colonizers from Europe. Unexpectedly, more than half of the paternal lineages (53.5%) of Cabo Verdeans clustered in haplogroups I, J, K, and R1, which are characteristic of populations of Europe and the Middle East, while being absent in the probable west African source population of Guiné-Bissau. Moreover, a high frequency of J* lineages in Cabo Verdeans relates them more closely to populations of the Middle East and probably provides the first genetic evidence of the legacy of the Jews. In addition, the considerable proportion (20.5%) of E3b(xM81) lineages indicates a possible gene flow from the Middle East or northeast Africa, which, at least partly, could be ascribed to the Sephardic Jews. In contrast to the predominance of west African mitochondrial DNA haplotypes in their maternal gene pool, the major west African Y-chromosome lineage E3a was observed only at a frequency of 15.9%. Overall, these results indicate that gene flow from multiple sources and various sex-specific patterns have been important in the formation of the genomic diversity in the Cabo Verde islands.
|
http://www.ncbi.nlm.nih.gov/pubmed/12942365
So only having the Y-DNA (paternal line) without the MTDNA (maternal line) is meaningless in regards to race and it is more useful for analysis of the large sample sizes like countries population because it gives us an idea about their migrations.
Also some mixed race people can have an European haplogroup in the paternal and maternal lines, specially in non-European countries that had a large European immigration like Argentina, Brazil or the US.
Only an autosomal dna test can give you a better idea about your own race/ethnicity.
http://dna.ancestry.com/
http://genealogy.about.com/od/dna_ge.../autosomal.htm
Quote:
Originally Posted by varg
I assume he set it that way because women don't have a Y chromosome. You could still find out your fathers, you won't be passing it on to your children though.
|
Women, in spite of not carrying a Y-chromosome, can still trace their paternal lineage. Using a DNA sample provided by a brother, father, or another paternal relative (for example, a male cousin) a woman can treat these Y results as if they were her own.