RNA Structure and Transcription

RNA Structure and - RNA Structure and Transcription Requirements of Genetic Material must contain biologically useful material that is maintained

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RNA Structure and Transcription Requirements of Genetic Material must contain biologically useful material that is maintained in a stable form must be capable of being understood by the organism by producing other molecules must be capable of faithful reproduction and transmission from one generation to the next must be capable of occasional change RNA v.s. DNA RNA is single-stranded different sugar-ribose rather than oxyribose uracil rather than thymine uracil acts just like thymine-pairs with adenine chemically, it is a cytosine which has been deaminated o deamination of cytosine happens spontaneously in the cell o result would be mutation o used to differentiate RNA from DNA Formation of RNA-Transcription process of copying DNA to make RNA Must be similar to replication o Both require DNA to unwind and copy the base sequence o RNA copies continously significant differences o replication copies the whole molecule transcription just copies a gene o replication copies both strands, transcription copies just one Ochea and Polynucleotide Phosphorylase o attaches RNA nucleotides onto a growing chain o doesn’t require a template-thus there is no specifity o only control over composition of the RNA is controlling the relative concentraions of the nucleotides TMV and Reverse Transcriptase o under normal conditions, RNA is only made by copying DNA o Exception is an RNA viruses (retroviruses) which make DNA from RNA,
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This note was uploaded on 04/17/2008 for the course BIO 2306 taught by Professor Durhkopf during the Summer '08 term at Baylor.

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RNA Structure and - RNA Structure and Transcription Requirements of Genetic Material must contain biologically useful material that is maintained

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