Can DNA test distinguish between grandchild and niece?
let me clarify on this; suppose I have a daughter and a son, and my son also has a daughter. Now the task is to determine the relationship of these two girls with me. Also suppose that the tester knows in advance with confidence which one is my daughter. Thus, only one person remains o be tested is my granddaughter. Now the question is that based on the information obtained from my daughter's DNA test, can the test determines whether the girl is my granddaughter or my niece?