and autosomal chromosomes are also used to trace genealogy, to extend the time ranges available for Y-DNA and mtDNA.

Comparison with short tandem repeats (STRs)

The properties of UEPs can be contrasted with those of short tandem repeat sequences (STRs), the other main type of genetic variation used in genealogical DNA testing.

Unlike UEPs, STR sequences are highly variable. There is a significant

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