What tool is used to provide a lot of numerical information in a very small area?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

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

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?