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Everything has been improved, because before you couldn’t do anything.
. When I arrived and there was a hair, all I could say was that it was a hair. Then, we began to make paternity testing with serious difficulties
But the biological criminology could not been improved until DNA advances appeared, relatively recently, 20 or 25 years ago.
It began to resolve all; we can answer to 97 or 98% of the cases, which is essential for the judge.
There are some cases that we can’t solve yet. They are about DNA degradation,
which is when DNA is damaged because it was contaminated or subjected to high temperature.
The cases of mixed profiles, that is when there are a lot of contributors in the same trace and some of them are in a smaller quantity, it’s very difficult.
There are many new things which are appearing, there are many new challenges. Now, we know the geographical origin of a person, if he’s Spanish or North African,
, the eyes color…but there are still many things we could improve and we are investigating.