What structural problem prevents adenine from pairing with guanine?

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 organ systems are working to you cool down after a workout?

What is the compliment dna strand to the following sequence: ttgactaggcta