If you find no insects at all in a pond or stream, what can you conclude?

Environmental impacts on evolution : mastery test

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

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?