![dna database graphs against universal database dna database graphs against universal database](https://venturebeat.com/wp-content/uploads/2020/03/Untitled-3.png)
Logically, as the number of citizens whose DNA has been analysed and included in a database increases, the probability of locating suspects also becomes greater. Therefore, a considerable range of possibilities have been opened up for criminal investigation, and if we compare the DNA analysis of evidence found at the crime scene (for example blood, hair, saliva, sperm, etc) with the analysis of samples which make up the database, we can locate the possible perpetrator of the crime We found the second system to be the best choice for Spain and other European countries with a similar tradition when we weighed the rights of an individual against the public's interest in the prosecution of a crime.Īdvances in DNA technology and the discovery of DNA polymorphisms have facilitated the creation of DNA databases of individuals for the purpose of criminal investigation. The advantages and disadvantages of each system are compared and controversial issues are then examined. The first system is based on a general analysis of the population the second one is based on the taking of samples for a particular list of crimes, and a third is based only on the specific analysis of each case. In this paper three main groups of possibilities, three systems, are analysed in relation to databases. Many ethical and legal problems arise in the preparation of a DNA database, and these problems are especially important when one analyses the legal regulations on the subject. Advances in DNA technology and the discovery of DNA polymorphisms have permitted the creation of DNA databases of individuals for the purpose of criminal investigation.