BIOA01H3 Chapter Notes - Chapter 11: Lig4, Onon River, Telomerase Rna Component

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17 Feb 2012
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BIOA01H3 Full Course Notes
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Bioa01fall2010 chapter 11: dna and its role in heredity. Transforming principle: some substance from the dead s pneumococci could cause a heritable change in the affected r cells. marker: a gene whose presenve in the recipient cell confers an observable phenotype. Transfection: genetic transformation of eukaryotic cells by dna. outer endges of the nitrogenous bases are exposed in the major and minor grooves. genetic material stores an organism s genetic information. genetic material is expressed as a phenotype. meselson and stahl demonstrated that dna replication is semiconservative. dna is replicated through the interaction of the template strand with a huge protein complex called the replication complex which catalyzes the reaction involved. dna replicates in both directions from the origin of replication, forming 2 replication forks. dna helicase uses energy from atp to unwind the dna and special proteins called single-strand binding proteins bind to the unwound strands keeping them apart.

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