How does fertilizer affect the quality of crops?​

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

Eutrophication caused by human nutrient pollution.

What is the role of dna ligase in the elongation of the lagging strand during dna replication?