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Transcript
DNA STRUCTURE Nucleotides are made of…. Phosphate Sugar Nitrogen Base The sugar in DNA is… Deoxyribose Nitrogen Bases-DNA Thymine Adenine Guanine Cytosine Scientists to Know Pg. 255 Rosalind Franklin (4th Paragraph) -What did she study? -What did the photos suggest? Watson and Crick (Last Paragraph) -What did Watson observe? -What did he immediately know? -What did Watson and Crick complete? What year? Chargaff (2nd Paragraph) -What did he find? -Give an example -What is Chargaff’s rule? Rosalind Franklin • Studied x-ray diffraction to determine the structure of DNA Chargaff’s Rule Base pairing rule A-T C-G DNA Replication Top of Pg.257 - Each cell needs to pass exact ______ of DNA to ________ cells (when cells divide). - Each strand can be used to make the other ________. - This is referred to as __________. - Example: (Please write the complementary strand to): TTAGACGTA DNA replication • http://www.youtube.com/watch?v=teV62zr m2P0 (Pre-AP) • http://www.youtube.com/watch?v=zdDkiR w1PdU