At the very least, they have to be accountable for between 400 and 500 different variations, which means that they have to obtain your DNA; they would have to clone it, probably to sequence it; then they would have to cut out the fragments that are associated with that individual, amplify that up, and then put it back somewhere else.
Au minimum, on obtient entre 400 et 500 variations différentes, ce qui veut dire qu'ils doivent obtenir votre ADN, qu'ils doivent le cloner, probablement le séquencer, et ensuite couper les fragments reliés à cet individu, les amplifier puis les réinsérer quelque part.