How are hydrogen bonds important in the replication of dna?

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

When analyzing tree rings, what do scientists assume a thin ring indicates?

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