11 - South Shore High School
DNA Replication Practice Directions: Below are the 3 steps in DNA replication. Follow the directions for each step and then answer the questions below.47409103175001.-What is happening to the DNA molecule in the figure? (Explain the first step in DNA replication) _________________________________________________________________________________________________________________________________________________________487743557150002.-What happens to the DNA molecule during the secondstep of DNA replication? ____________________________________________________________________________________________________________________________________473773595250003.-What happens during the third step of DNA replication?_____________________________________________________________________________________________________________________________________________How DNA Is Copied4.What does it mean that the two strands of DNA are complementary? ____________________________________________________________________________________5.What is DNA replication?________________________________________________6.Using your notes, book, and this assignment, place the steps of DNA replication in the correct order.____a.The enzyme DNA polymerase moves along the exposed strands and addscomplementary nucleotides to each nucleotide in each existing strand.____b.The DNA double helix breaks or unzips down the middle between the base pairs.____c.A complementary strand is created for each of the two strands of the originaldouble helix.____d.Two new identical DNA molecules have been produced.(True or False) The process of DNA replication results in a copy of the original DNA molecule. (True or False) DNA does not have to break apart to be copied.(True or False) After DNA replication is complete, there are two new DNA molecules; one molecule has both of the original strands and one molecule has two new strands of DNA.Where does DNA replication happen?______________________________________________________________________________________________________________.When does DNA replication happen?________________________________________Below are DNA strands. Make the complementary DNA strand: Original Strand: A T G C A A A T T G C T C A C C G G G G A T C A G C A C C G GComplementary Strand: Original Strand: A G G G G A T C A G C A C C G G A T T T C A T G A G C C C T A Complementary Strand:Make a DNA Timeline on another sheet of paper. This timeline must include:The enzymes that are doing each step. 553783552070Pictures of DNA Replication00Pictures of DNA ReplicationA written description of the three steps of DNA replication.A picture of each of the three steps of DNA replication.199453516129000210883544450DNA Replication Timeline00DNA Replication Timeline5652135161290Descriptions of the three steps of Replication00Descriptions of the three steps of Replication4737735389890004394835618490Step 3 ……00Step 3 ……3480435618490Step 2 ……00Step 2 ……2451735618490Step 1 ……00Step 1 ……245173527559000348043527559000439483527559000210883561849000Example timeline: ................
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