1.The double helix unzips with helicase down the middle as base pairs separate. 2. DNA polymerase adds the correct complimentary nucleotide to each exposed strand. Ligase connects all fragments. 3.A complimentary strand is created for each original strand in the double helix. DNA Replication Summary

DNA Replication Telomeres: The DNA found at the ends of the chromosome. – The DNA at the end of the chromosome is difficult to replicate – Telomerase adds short repeating segments of DNA to the chromosome