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DNA: The Genetic Material PowerPoint Presentation

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Description : Check out this medical presentation on Genetics, which is titled "DNA: The Genetic Material", to know about Deoxyribonucleic acid (DNA).

Tags : Genetics, DNA, Genetic Material, Deoxyribonucleic acid

Published on : Jul 12, 2021 | Views : 2739 | Downloads : 0

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Slide 1-

DNA: The Genetic Material
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DNA Deoxyribonucleic Acid
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DNA  Polymer : Nucleotide  Monomer Each Nucleotide has 3 parts: 1) 5 carbon sugar  Deoxyribose 2) Phosphate group  PO4 3) Nitrogen Base
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Identifying the Genetic Material Experiments of Griffith and Avery yielded results that suggested DNA was genetic material (1944)
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Hershey & Chase used the bacteriophage T2 and radioactive labels to show that virus genes are made of DNA, not protein (1952)
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DNA stores information that tells cells which proteins to make and when to make them
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DNA forms a spiral ladder  Double Helix Double helix is held together by weak Hydrogen bonds Erwin Chargaff Discovery Chargaff’s Rule A=T, G=C
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Rosalin Franklin
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The Structure of DNA Discovered by Watson & Crick in 1953 received Nobel Prize in 1962 along with Maurice Wilkins
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DNA Replication Phase of Cell Cycle? Why replicate? Step 1: DNA Helicase unzips DNA by breaking weak Hydrogen bonds. Step 2: DNA polymerase adds nucleotides to exposed nitrogen bases. Step 3: Two DNA molecules form that are identical to original.
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DNA is referred to as “Semi-conservative”, Each DNA molecule  1 template & 1 new strand DNA polymerase proofreads DNA during its replication so that very few errors occur
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The secrets of the sequence http://www.youtube.com/watch?v=sf0YXnAFBs8