chapter 12 DNA The Carrier of Genetic Information

chapter 12 DNA The Carrier of Genetic Information - DNA The...

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Unformatted text preview: DNA: The Carrier of Genetic Information · Evidence of DNA as the Hereditary Material · Virulence- ability to cause disease and even death · Avirulence- inability to produce pathogenic effects · Transformation- Permanent genetic change in which the properties of one strain of dead cells are conferred on a different strain on living cells · Bacteriophages- viruses that infect bacteria · · Structure of DNA · Template- pattern or guide, DNA is its own template · Each DNA building block is a nucleotide consisting of the pentose sugar deoxyribose · Bases- purines adenine (A) and guanine (G) , and two pyrimidines, thymine (T) and cytosine (C) · Phosphodiester linkage- 3 carbon of one sugar bonds to 5 phosphate of adjacent sugar to form 3 5 linkage · 5 end- 5 carbon attached to a phosphate · 3 end- 3 carbon attached to a hydroxyl group · Chargaff’s rules- ratio of 1:1 in DNA, pyrimidines: purines, A:T, G:C ·...
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chapter 12 DNA The Carrier of Genetic Information - DNA The...

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