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Biology DNA: Interactive Name: Jacob Smith Simulation I: DNA Replication Go to: http://www.pbs.org/wgbh/aso/tryit/dna/shockwave.html (Link #1 on Webpage) Click: “DNA replication” (upper left) and then click “Unzip” Read the script and answer the questions below. 1. In a real cell, what does the DNA molecule do before it unzips? The DNA unwinds from spools made of protein. 2. What molecules break the rungs (bases) apart? Enzymes Drag the correct bases over to “Synthesize” the new DNA halves. Read script, answer questions, and then click “OK”. 3. How many base pairs are in the real human genome? 3 billion Simulation II: DNA Replication Go to: http://nobelprize.org/educational_games/medicine/dna_double_helix/ (Link #2 on Webpage) ● Click on “Play Game”; Click “Next” and reading each page, continue to click next until you come to the game.; Click on organism #1 and match the base pairs as fast as you can! It is hard. ● Click “Next” and then click on each organism until you identify the one that belongs to chromosome #1; Record the information in the chart below. ● Continue playing the game with the other two organisms, filling in the chart below. How many chromosomes? How many base pairs? Chromosome # What is the organism? How many genes? 5 125 25000 Thale cress 1 1 5 4300 e- coli 2 8 3 180 13500 fuit fly