Complete the following statements regarding the steps necessary to copy a dna sequence during pcr: 1) the two original strands of the dna molecule can be separated by 2) the enzyme "reads" each template strand and adds to make a new strand.

1. Helicases

2. DNA polymerases, nucleotides

Explanation:

During DNA replication Helicases are the enzymes which separates the two strands of DNA forming replication fork.

DNA polymerase add DNA nucleotides to form new strand. DNA polymerases does not add nucleotide itself instead need a small RNA fragment called primer which bind with the template DNA strand. Once primer bind the DNA polymerase add nucleotides to the new strand.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.v