Assertion: ancestor's dna | /r/HasProperty | passed intact
Facets:
value: from one generation
type: TEMPORAL
value: except for an occasional mutation
type: OTHER
value: like y-line dna
type: OTHER
Source sentences:
text: Like Y-line DNA, mitochondrial DNA is passed intact from one generation to the next, except for an occasional mutation that allows us to identify family members and family lines.