Assertion: genealogy's ancestor | /r/CapableOf | study sibling
Facets:
Source sentences:
text: At ten generations back, an individual has up to 1024 unique ancestors (fewer if ancestor cousins interbred) and a Y-DNA or mtDNA test is only studying one of those ancestors, as well as their descendants and siblings (same sexed siblings for Y-DNA or all siblings for mtDNA).