DNA Lab Report Essay

What is desoxyribonucleic acid? What do the garner stand for? What is it composed of? Where is it found? What is it shaped analogous? Answer in full sentences. It is the genetic genuine that can be passed on from pargonnt to offspring deoxyribonucleic acid Deoxyribonucleic acidulousIt composed of Deoxyribose (5 carbon sugar), a phosphate and a Nitrogonous base (the 4 N-bases are Guanine, Cytosine, Adenine and Thymine) It is a geminate whorl (looks like a twisted ladder.)DNA is found in the nucleus of most cellsGo to www.dnai.org TimelineVisit the above website, read a scientists biography, watch an interview, or work through an experiment to identify scientists, dates, events, and facts that physical composition the major advances (so far) in the science of DNA. List the answer in front of each indicateion on a lower floor1. Johann Gregor Mendel__________It took him eight years and more than 10,000 pea plants to discover the laws of inheritance.2. ___ Linus Pauling_______E ven though he added an extra maroon to the structure of DNA, he ultimately won two Nobel Prizes the Nobel Prize in Chemistry and the Nobel Peace Prize.3. _____ Martha chase after and Alfred HersheyThese two scientists used a common kitchen appliance to help show that phage DNA carries instruction manual to make new viruses.4. ____ Barbara McClintock______Next time youre munching away at the movies, think of this Nobel-Prize winning scientist who figure turn up the process of transposition in corn chromosomes.5. _____ 1962_____When did Watson, Crick, and Wilkins win the Nobel Prize in Physiology or medicine for their feign of the structure of DNA?6. _____ David Baltimore_____This scientist found that some viruses have an RNA-dependent DNA polymerase that was later named reverse transcriptase. He was one of three who shared in the 1975 Nobel Prize in Physiology or Medicine.7. _____ The Human Genome Project_____J. Craig Venters company, Celera Genomics, worked on this very impor tant project.8. ____ Density gradient centrifugation______Matthew Meselson and Frank Stahl invented this new technique in their quest to prove that DNA replication is semi-conservative.9. _____ Friedrich Miescher_____I first isolated DNA using pus peaceful from bandages at alocal hospital. Since white blood cells are a major component of pus, they were my author of DNA. Yuck10. _____ doubting Thomas Hunt Morgan_____The fly room at Columbia University was established through my efforts. Imagine working in a room filled with bottle after bottle of fruit flies11. ____ Thomas R. Cech______I showed that RNA could act as its own catalyst. Because of my work, it is no longer correct to state, each enzymes are proteins.Go to www.dnai.org Code Finding the Structure problem As you work through the problem section, write, in your own words, the specific contribution that each scientist make to the DNA story in the spaces provided below.ScientistContributionFriedrich MiescherHe is famous for discovery of nucleic acid, which led to the discovery of DNA. This occurred while he was studying proteins in leukocytes. He named it nucleic acid because it came from the nucleus of the cell.Phoebus LeveneIn 1909 Levene found that the carbohydrate present in yeast nucleic acid is the pentose sugar ribose he succeeded in identifying the carbohydrate in thymus nucleic acid. Levene had succeeded in establishing the nucleic acids as genuine molecules existing independently of the proteinsOswald AveryHe discovered that DNA is the material of which genes and chromosomes are made. Go to www.dnai.org Code Finding the Structure players View and bear in mind to the videos and read the text at the site listed above. Write, in your own words, the specific contribution that each scientist made to the DNA story in the spaces provided below.ScientistContributionFrancis Crickfound out the structure of DNA (the double helix).Erwin ChargaffChargaff discovered two rules that helped lead to t he discovery of the double helix structure of DNARosalind FranklinTook x-ray of DNA. DNA crystallography allowed Crick to look at the picture to determine itLinus PaulingLinus Pauling contributed a triple-stranded DNA model to scientific interrogation in 1953.Maurice WilkinsHe made discoveries about the molecular structure of nucleic acids and their significance for information transfer in living material.James Watsondiscovery of the molecular structure of deoxyribonucleic acid DNA the building block of all lifeAnswer the following questions, referring back to the materials you viewed above 1. Watson and Crick knew that the triple helix model of DNA that Linus Pauling had proposed was incorrect. What evidence did they have for such a conclusion? The problem of replication could not be worked out in triple helix.2. The work of Rosalind Franklin provided a key piece of data for Watson and Cricks model of DNA. Summarize that evidence and how it was pivotal to the correct model being built. Rosalind Franklin provided x-ray crystallography photographs that showed a triple helix did not work.