Zoology - Lecture 8 - 1 How does DNA work? • Codes for...

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Unformatted text preview: 1 How does DNA work? • Codes for genes that are inherited from your parents – Sequence of DNA that specifies the creation of an mRNA strand – These mRNA strands code for the creation of polypeptides/proteins – Proteins are what allows cells to grow, function, communicate, etc. Recall… • DNA: Double stranded • A – T and G – C • The cookbook for creating RNA and proteins • RNA: Single stranded • A – U and G – C • The “chef” of RNA and protein production • Three types RNA mRNA: • carries message of DNA • 500-3000 nucleotides rRNA: • forms ribosomes • 100-3000 nucleotides tRNA: • transfers amino acid • 75-80 nucleotides Protein synthesis • DNA codes for proteins 1. Transcription = transfer of info from DNA to mRNA (in nucleus) 2. Translation = transfer of info from mRNA into a polypeptide (in cytoplasm -- ribosomes) Cytoplasm Nucleus 13.01 DNA to RNA to Protein Transcription DNA RNA Protein Translation 2 G RNA 13.06 The Relationship Among RNA, the DNA Template Strand, and the DNA Coding Strand G 5’ DNA coding strand DNA template strand 5’ 3’ 5’ 3’ DNA G T C A T T C G G C A G T A A G C C G RNA 13.06 The Relationship Among RNA, the DNA Template Strand and the DNA Coding Strand C G 5’...
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This note was uploaded on 04/22/2008 for the course ZOO 1114 taught by Professor Melodybrooks during the Spring '08 term at The University of Oklahoma.

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Zoology - Lecture 8 - 1 How does DNA work? • Codes for...

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