Friday 3-19-2010 NOTES: Transcription.

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Presentation transcript:

Friday 3-19-2010 NOTES: Transcription

(1) Transcription Purpose: Copy instructions from DNA  mRNA Where: Nucleus “Players”: DNA mRNA

(2) Transcription Steps Unwind DNA Unzip DNA & Separate Strands Match up complimentary RNA bases to DNA bases. Connect RNA nucleotides together. Connect DNA back together. *Enzymes do all of the work! The End Result: 1 molecule of mRNA RNA genetic code = DNA genetic code

(3) Matching Complimentary Bases DNA Strand New mRNA A T G C

(4) 3’  5’ RNA nucleotides are matched up moving 3’ to 5’ along the DNA template strand. Enzymes can only move in this direction!

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