In the case of parent- child DNA testing - and in the absence of a parent - how/ why is it possible that the DNA from one of the parent' s siblings can be used instead? And are the results as accurate as a direct sample from the parent? I find it incredibly interesting.
Depending on the area of study, geneticists usually use TRIOS ( mom, dad and child) to look for genetic links. . . . it makes it more difficult to study if one parent is missing but not impossible -
one parent' s sibling would be fine as well.
Answered By: Dr. Dennis McCormac