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Name: Unit 5: Genetics Date: Aim 23: How does the process of transcription allow DNA to transfer its “instructions” to the rest of the cell? What is the “Central Dogma” of Biology? DNA codes for _________ and __________ codes for ______________________ RNA is very similar to DNA except… What is RNA? Name RNA nucleotides contain…. Nucleotides 1. _________________ sugar (instead of deoxyribose) 2. 3. # of strands Bases 1. __________________(A) 2. __________________(U) * NO THYMINE! * 3. __________________(G) 4. __________________(C) DNA holds the cells “instructions” but is trapped inside of the nucleus. So how does the DNA get the message to the rest of the cell where the proteins are made? DNA is too ________________ to leave the nucleus, so a smaller molecule called __________ is made to carry the _______________________ out of the _________________ so ____________________ can be made. * This is completed through the process of _________________________________ * Transcription What is it? Process in which ________ is made from _________ Where does it occur? Where is RNA made? Why does it occur? So the ___________________________ can travel to the __________________ to begin the synthesis of ________________________ Steps of Transcription: 1. The DNA strands _______________ creating two ________________ strands 2. _________ nucleotide subunits (sugar, phosphate and base) are paired to their complimentary DNA base pairs on the DNA strand RNA Base pairing: Adenine binds to ____________________ Cytosine binds to ____________________ 3. The _________ disconnects from the DNA and leaves the __________________ and travels to the ______________________ 4. DNA ____________________ back up into a ________________________ Compare and Contrast DNA and RNA a) b) c) d) e) f) Name of each molecule How many strands are found in each molecule? What is the sugar in the nucleotide of each molecule? Where is the molecule found? What are the bases in each molecule? Similarities between the two molecules a) a) f) b) b) c) c) d) d) e) e) Practicing Transcription: Write the complimentary RNA strand for each DNA strand below Original DNA: A A G New RNA: _______ Original DNA: G A A New RNA: G T A C T T G AA C C T A C T T A G ______ ______ ______ ______ ______ ______ G A T _______ ______ Original DNA: C G C A T C New RNA: ______ _______ A C A ______ A T A ______ T C G ______ T A G ______ A C C T C A A T C ______ ______ ______ C C A A C G T A T ______ ______ ______