<P> DNA profiling is most commonly used as a forensic technique in criminal investigations to identify an unidentified person or whose identity needs to be confirmed , or to place a person at a crime scene or to eliminate a person from consideration . DNA profiling has also been used to help clarify paternity , in immigration disputes , in parentage testing and in genealogical research or medical research . DNA fingerprinting has also been used in the study of animal and floral populations and in the fields of zoology , botany , and agriculture . </P>
what are the two most common uses of dna fingerprinting
identify an unidentified person or whose identity needs to be confirmed place a person at a crime scene or to eliminate a person from consideration