What are some of the problems and flaws with DNA fingerprinting?

Answer 1

The flaw I have found is in the way the get the sample, by blood, or with a swab of the cheek. As you might expect the blood was the most believable match based on other objective evidence.

What prompted my research was a personal experience in a flawed match. I had a son and used the DNA lab used by one government agency and they said he was my son. Then it had to be redone for another government agency (because government agencies do not trust other government agencies) and it was not a match. Which do you believe?

Since the result was different I checked with them and they both said this could not be their error! Since the child's photos look just like mine at the same ages, and he is also allergic to the exact same foods as me! Plus the old fashioned paternity tests (before DNA) also confirm he is my son. Therefore, I have no doubt he is my son!

The test that was in error costs me over $800 plus an extra fee for the actual obtaining of the test sample. The test I believe was actually done with blood from both of us. The flawed test was done with the swab in the cheek from both of us.