genetic fingerprinting
From Longman Dictionary of Contemporary EnglishRelated topics: Biology, Technologygenetic fingerprintinggeˌnetic ˈfingerprinting noun [uncountable] HBTthe process of examining the pattern of someone’s genes, especially in order to find out if they are guilty of a crimeExamples from the Corpusgenetic fingerprinting• But using the technique of genetic fingerprinting at the Cellmark laboratories in Abingdon, scientists discounted the claims the birds were sisters.