Dna replication results in two identical dna molecules. what role do dna helicases have in dna replication?

Dna has unique properties that allow it to accurately retain genetic information, even after multiple rounds of replication. one aspect of dna that allows it to accurately store genetic information is the base pairing from chargaff\'s first rule of the four nucleotide bases. if the c content of a dna molecule is 22%, what are the percentages of the remaining bases?

Imagine that you are a doctor in a maternity ward. during your last shift, 20 babies were born. 10 had blue eyes, and 10 had brown eyes. 15 had round heads, and 5 had pointed heads. what are the parents phenotypes/traits?

Aclient experiencing hallucinations tells a nurse, "the voices are telling me that i am evil." the client asks whether the nurse hears the voices. what is the most appropriate response by the nurse