Here is where your presentation begins HISTORY of DNA
What is DNA? Deoxyribonucleic acid [DNA] is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid (RNA) are nucleic acids. Alongside proteins, lipids and complex carbohydrates (polysaccharides), nucleic acids are one of the four major types of macromolecules that are essential for all known forms of life.
DNA was first isolated by the Swiss physician Friedrich Miescher who, in 1869, discovered a microscopic substance in the pus of discarded surgical bandages. As it resided in the nuclei of cells, he called it “ nuclein ”. In 1878, Albrecht Kossel isolated the non-protein component of “ nuclein ”, nucleic acid, and later isolated its five primary nucleobases.
In 1909, Phoebus Levene identified the base, sugar, and phosphate nucleotide unit of RNA (then named “yeast nucleic acid”). In 1929, Levene identified deoxyribose sugar in “thymus nucleic acid” (DNA). Levene suggested that DNA consisted of a string of four nucleotide units linked together through the phosphate groups (“ tetranucleotide hypothesis”). Levene thought the chain was short and the bases repeated in a fixed order. In 1927, Nikolai Koltsov proposed that inherited traits would be inherited via a “giant hereditary molecule” made up of “two mirror strands that would replicate in a semi-conservative fashion using each strand as a template”. In 1928, Frederick Griffith in his experiment discovered that traits of the “smooth” form of Pneumococcus could be transferred to the “rough” form of the same bacteria by mixing killed “smooth” bacteria with the live “rough” form. This system provided the first clear suggestion that DNA carries genetic information History of DNA
01 SECTION Here you could describe the topic of the section
STUDY OBJECTIVES MERCURY Despite being red, Mars is a cold place, not hot. It’s full of iron oxide dust, which gives the planet its reddish cast MARS VENUS Venus has a beautiful name and is the second planet from the Sun. Its atmosphere is extremely poisonous Mercury is the closest planet to the Sun and the smallest one in the Solar System—a bit larger than our Moon
LITERATURE REVIEW Neptune is the farthest planet in our Solar System. It’s the fourth-largest by diameter and the densest 03 Theory 01 Theory 02 Theory Mercury is the closest planet to the Sun and the smallest one in the Solar System—it’s only a bit larger than our Moon 04 Theory Despite being red, Mars is a cold place, not hot. It’s full of iron oxide dust, which gives the planet its reddish cast Venus has a beautiful name and is the second planet from the Sun. It’s terribly hot, even hotter than Mercury
Venus has a beautiful name and is the second planet from the Sun. It’s terribly hot Jupiter is the biggest planet in our Solar System and also the fourth-brightest object in the sky Saturn is a gas giant, composed mostly of hydrogen and helium VENUS JUPITER SATURN METHODOLOGY
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RESULTS ANALYSIS Saturn is a gas giant, composed mostly of hydrogen and helium 1,520 Jupiter is the biggest planet in our Solar System 5,000 Neptune is the farthest planet from the Sun 3,250
CONCLUSIONS 01 CONCLUSION Jupiter is a gas giant and the biggest planet in our Solar System. It’s also the fourth-brightest object in the sky, and its name comes from the Roman god of the sky and lightning 02 CONCLUSION Mercury is the closest planet to the Sun and the smallest one in the Solar System—it’s only a bit larger than our Moon. The planet’s name has nothing to do with the liquid metal
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RESOURCES ICONS Biology VECTORS Abstract dna background Abstract dna background Abstract dna background PHOTOS Close-up of a dental microscope
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