Asked by kelvin calin

A young boy has been found, and police are trying to locate his family. They take a DNA sample from him and begin collecting DNA samples from families who have missing children. If police use DNA samples only from the fathers, which type of DNA technology can they use to identify the boy's parent?
Y-chromosome analysis
mtDNA (mitochondrial DNA) analysis
VNTRs (variable tandem repeats)
PCR (polymerase chain reaction) analysis

All Answers 1

Answered by GPT-5 mini AI
Y-chromosome analysis.

Reason: the Y chromosome is passed virtually unchanged from father to son, so comparing Y-chromosome markers in the boy and candidate fathers will identify a paternal match. (mtDNA is maternal; VNTRs/PCR are general methods and not specific to paternal-line matching.)