Am I able to download my raw data?

Family Tree DNA does not have a file format for Y-chromosome DNA single nucleotide polymorphism (SNP) results. However, your raw data, the actual values for [...]

Do SNPs ever “mutate back?”

Yes. It is possible that a SNP will back mutate (change back). However, SNPs are slow changing. Thus, back mutations are uncommon.

Are Y-DNA haplogroups the same as mtDNA haplogroups?

No, the names in the mitochondrial DNA (mtDNA) haplogroups do not correspond with the same names in the Y-chromosome DNA (Y-DNA) haplogroups.

 

 

How are haplogroups and their subclades named?

Y-Chromosome DNA (Y-DNA) haplogroups and subclades names follow the conventions of the Y-Chromosome Consortium’s (YCC). The YCC short form names haplogroups with the first letter from [...]

How often does Family Tree DNA update their tree?

Family Tree DNA updates the phylogenetic tree when we have substantial evidence that there is a new branch or a new placement for a [...]

How does Y-chromosome DNA (Y-DNA) haplogroup prediction work?

At Family Tree DNA, a Y-DNA haplogroup prediction is calculated using genetic distance. The calculation finds your most likely haplogroup. The prediction program compares [...]