HELP I WILL GIVE THE CROWN

What is a cordon and where is it found

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis