.What factors determine the response to a chemical?

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

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not