I want to know the answer to the following question:
What did a 2013 study of Ashkenazi mitochondrial DNA find in regards to the Khazar descent idea?
All the background I'm provided with is that "A 2013 study of Ashkenazi mitochondrial DNA found no significant evidence of Khazar contribution to the Ashkenazi Jewish DNA, as would be predicted by the Khazar hypothesis.". Is that enough to answer the question?
Answer: yes