The possible research of family trees is based on the fact that ______.A.genetics has achi
The possible research of family trees is based on the fact that ______.
A.genetics has achieved a breakthrough
B.genetic information contained DNA can be revealed now
C.each individual carries a unique record of whom 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