Answer:
Option D, 1 and 6
Step-by-step explanation:
If analysed properly one could see that the pattern generated in the DNA finger printing of the sample 1 and 6 are exactly the same.
In normal DNA testing, two individual have to match up to 99.99% in order to show that they belong to a common ancestry.
Since, both the sample 1 and 6 have the same graph as compared to others it is clear that sample 1 and 6 has come from the same person.
Thus, option D is correct.