The muscles contract to raise the hair shafts to use the body hair to trap heat

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

All ova contain sex chromosomes corresponding to: x y xx xy

Which measure of an earthquake depends on how close you are to the focus?