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The Discovery of DNA

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In 1953 James D. Watson and Francis H.C. Crick published a paper in which they proposed a model for the physical and chemical structure of the DNA molecule. According to their model, most DNA consists of two polynucleotide chains wound around each other in a right-handed (clockwise) helix. In generating their model, Watson and Crick used three main pieces of evidence:….

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DNA MOLEKÜLÜ

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Tüm canlılar DNA’ya sahiptirler. DNA üzerindeki bu bilgi, canlının bir mısır bitkisi mi, bir bakteri mi yoksa bir kartal mı olacağını belirler… DNA molekülü canlıların hücrelerinin çekirdeklerinde “kromozom” ismi verilen paketçiklerde sıkıca paketlenmiÅŸ olarak bulunur. DNA’daki bilgi, dört çeÅŸit nükleotidin deÄŸiÅŸik ÅŸekillerde dizilmesiyle kodlanmıştır.23 ciltlik Britannica Ansiklopedisi’nin toplam 25 bin sayfası vardır. Mikroskobik…
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Endokrin Sistem

ODEVHORMON:Vücudun herhangi bir yerindeki hücrelerce salgılanan, ancak salgıladığı  hücrelerde etkili olmayıp, vücudun diÄŸer bölümlerindeki hücrelerin geliÅŸim ve aktifliÄŸi üzerinde etkili olabilen maddelerdir…
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DNA Structure

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Konun GiriÅŸi;

In 1953 James D. Watson and Francis H.C. Crick published a paper in which they proposed a model for the physical and chemical structure of the DNA molecule. According to their model, most DNA consists of two polynucleotide chains wound around each other in a right-handed (clockwise) helix. In generating their model, Watson and Crick used three main pieces of evidence…

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