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DNA NOTES I. What is DNA 1. 2. DNA has a twisted ladder shape or ________________ 3. The DNA model was created by___________&____________ II. DNA Model Made of 3 Major Components 1. 2. 3. 4 Different Bases 1. __________ 2. __________ 3. __________ 4. __________ Bases Occur in pairs A nucleotide is when one phosphate group, one nitrogen base and one _______________ are A pairs with____ linked together. They make up the parts of the C pairs with ____ ladder. DNA Replication(copying) 1. 2. 3. Why is DNA Replication so important? * Match the complimentary bases with this strand of DNA. A C G T C A T C C T T G A GENES DNA stores the instructions for making ______________that determine such traits as _________, _________, _________ and tasting. The instructions to make these certain proteins are found on ______ The genes determine the order of _______ _______ to be made Changing the order of Amino acids changes the _________ to be made Ordering of How Traits Are Produced Nitrogen bases code for the type of _______ _______to be made Different ______ _________sequence makes different proteins. __________ determine which traits you are going to have Making Proteins The codes for proteins are carried by another nucleic acid called ________ RNA RNA Has bases A, G, C, but has ______________ instead of ________ 3 Kinds of RNA( all made from DNA) 1. Messenger RNA( ) - )– 2. Transfer RNA ( 3. Ribosomal RNA ( ) * How Proteins are made 1. 2. 3. 4. Mutations Mutations are ________________________________________ If DNA isn’t copied right then ____________________________ What are some causes of mutations? 1. 2. 3. Without the correct protein what can happen? 1. 2. 3. Mutations in the _____________ may not be as serious Mutations in _____________ mean that the mutation is permanent. Mutations bring ___________ to a species. Mutations can be ________________ and _____________ Can you answer these? How are proteins made? What is DNA, and its function? What is a gene, and its function? What is a mutation, and what causes them? What is the structure and function of DNA?