The Ancestry Composition algorithm comprises four distinct steps. First, we use a computational method to estimate the phasing of your chromosomes, that is, todetermin… See more

Recall wrinkle #2 above. For each customer, we measure a set of genotypes (pairs of alleles).But what we really want is a pair of haplotypes for each chromosome. That is, we … See more

After phasing your chromosomes, we segment them into consecutive windows containing ~300 geneticmarkers each. We measure between 7,400 and 45,000 markers pe… See more

The SVM classifies each window of your genome independently, creating a "first draft" version ofyour ancestry result. We use another computational process, called the smooth… See more