thE possiBlE rEsEArCh oF FAmily trEEs is BAsED on thE FACt thAt ______.
A．gEnEtiCs hAs AChiEvED A BrEAkthrough
B．gEnEtiC inFormAtion ContAinED in DnA CAn BE rEvEAlED now
C．EACh inDiviDuAl CArriEs A uniquE rECorD oF who hE is AnD how hE is rElAtED to othErs
D．wE CAn usE DnA to provE how DistAnt An inDiviDuAl is to A FAmily, A group or A populAtion