Assertion: ancestor's dna | /r/HasProperty | shared by their parents
Facets:
value: in the case of first cousins
type: OTHER
Source sentences:
text: It’s true that with every generation of descendants a little less DNA is inherited from the common ancestor (or pair of ancestors, like grandparents in the case of first cousins), but in the case of first cousins, so much DNA is shared by their parents, whether they were full or half-siblings, that it is statistically impossible for first cousins to share no DNA.