Developmental Biology 278 (2005) 274 – 288 www.elsevier.com/locate/ydbio Review Friedrich Miescher and the discovery of DNA Ralf Dahm* Max Planck Institute for Developmental Biology‚ Department 3 – Genetics‚ Spemannstr. 35/III‚ D-72076 Tubingen‚ Germany ¨ Received for publication 5 October 2004‚ revised 17 November 2004‚ accepted 20 November 2004 Available online 21 December 2004 Abstract Over the past 60 years‚ DNA has risen from being an obscure molecule with presumed accessory or structural
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DISCOVERY OF EARTH’S HISTORY: “FOSSILS” I.OBJECTIVES 1. WHAT IS FOSSILS? 2. HOW THEY WERE FORMED? 3. FOSSILIZATION PROCESSESS 4. FOSSILS RECORD 5. TYPES 6. PSEUDOFOSSILS 7. HISTORY OF THE STUDY OF FOSSILS 8. TRADING AND COLLECTING 9. IMAGE GALLERY II.DISCUSSION FOSSILIZATION PROCESSESS Permineralization Permineralization is a process of fossilization that occurs when an organism is buried. The empty spaces within an organism
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Function Discovery Quick Reference Sheet by Maxwell Cohen Table of functions used in ENGR 132 Type of equations General form The plot that shows your data as linear Linear y=mx + Linear Standard graph b Y vs. X Exponential X y=bemx ln(y) =mx+ln(b) Y = mx+B semilogy mx y=b10 log(y) =mx+log(b) log(Y) vs. X Logarithmic* x=bemy ln(x) =my+ln(b) X = my+B semilogx my x=b10 log(x) =my+log(b) Y vs. log(X) Power y=bxm ln(y)=m*ln(x)+ln(b) Y = mX+B log-log log(Y) vs. log(X) *logarithmic equations with calculations
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the Knight and the Squire. The squire is the son of the Knight; both ride gallantly and have the air of true gentleman warriors. However‚ the two are very dissimilar despite their appearances. The Knight possesses the true qualities of chivalry‚ devotion to service‚ constancy in humility‚ and honesty. The Squire possesses none of these qualities truly; instead his demeanor is one that is less honorable and virtuous. Although both claim the same vocation‚ the Squire and the Knight display
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TEJADA‚ ANGELICA F. SY1315 The Discovery of the Katipunan On July 5‚ 1896‚ Manuél Sityar‚ a Spanish lieutenant of the guardia civíl stationed at Pasig‚ reported to Governor-General Ramón Blanco y Erenas the mysterious activities of certain Filipinos who had been gathering arms and recruiting men for some unknown purposes. On August 13‚ 1896‚ Fr. Agustín Fernández‚ an Augustinian curate of San Pedro‚ Makati‚ wrote to Don Manuél Luengo‚ Civil Governor of Manila‚ denouncing anti-Spanish meetings
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stand in sharp contrast to each other. The clerk and the squire are of similar ages but are very different. The clerk is a member of the middle class‚ has attended Oxford and studied Aristotle‚ while the squire‚ a member of the upper class‚ has been educated in the arts of chivalry. In appearance wise the clerk is a "grave" or somber individual. He is thin "hollow-cheeked" and dresses poorly ("outer cloak threadbare"). On the other hand the squire is a bright‚ cheerful person. He is lusty‚ strong and
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anything away. One day‚ Fleming noticed blue fungal spores growing on one of his unwashed petri dishes (Wilson). Fleming almost destroyed the culture until he realized that all the staph bacteria had been eliminated. September1928 marked the discovery of penicillin; he seized the moment and changed
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The Discovery of Neptune Neptune was discovered in September 1845. It was discovered by means of mathematics before being seen through a telescope. It began in 1843 when John Adams‚ a young English astronomer and mathematician‚ began working to find thew location of the unknown planet. Adams predicted the planned would be about 1.6 billion kilometres farther from the sun then Uranus. That’s when he completed his work in September 1845. Also Urbain Leverriar‚ unknown to Adams‚ began working
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The Discovery Of The Electron The electron was discovered in 1895 by J.J. Thomson in the form of cathode rays‚ and was the first elementary particle to be identified. The electron is the lightest known particle which possesses an electric charge. Its rest mass is Me <approximately equal> 9.1 x 10 -28 g‚ about 1/1836 of the mass of the proton or neutron. The charge of the electron is -e = -4.8 x 10^-10 esu <elec trostatic unit). The sign of the electron’s charge is negative by convention‚ and
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Discovery Kazakhstan Animals of Kazakhstan Every person‚ who lives in Kazakhstan‚ knows‚ that animals of our motherland are very important not just for Kazakhstan‚ but for the whole world! I definitely agree with this opinion. In the essay‚ I will give you the basic reasons and explain‚ why most of the people tend to think that way. First of all‚ from the ancient times‚ different natural creatures help Kazakh people to survive in our cruel prairie. We cannot deny‚ that Kazakh nation always
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