2. DNA Replication Gaiser Life Science

3. Know Why is DNA important? Evidence Page 32 DNA Replication Explain your answer.

4. Clarifying ?s Information Page 33 Double helix – DNA looks like a twisted ladder or a spiral staircase. – DNA looks like a twisted ladder or a spiral staircase. Structure Bases DNA Replication Nitrogen bases 1. adenine 1. adenine 2. thymine 2. thymine 3. guanine 3. guanine 4. cytosine 4. cytosine pairs Adenine only pairs with thymine. Example: (A+T = AT) or (T+A + TA) Guanine only pairs with cytosine. Example: (C+G = CG) or (G+C = GC)

5. Clarifying ?s Information Page 33 FYI – Each new DNA molecule will be an exact duplicate of the original DNA molecule. FYI – Each new DNA molecule will be an exact duplicate of the original DNA molecule. DNA Replication Summary: Example: (C+G = CG) or (G+C = GC) Replication process Step 1 – The two sides of DNA unwind and seperate Example: like a zipper unzipping Step 2 – Floating nitrogen bases line up. Example: TA, AT, CG, & GC Step 3 – Bases attach to each other and 2 new DNA molecules are formed. Example: like a zipper zipping up again

7. Page 33 Clarifying ?s Information DNA Replication Double helix – DNA looks like a twisted ladder or a spiral staircase. – DNA looks like a twisted ladder or a spiral staircase. Structure Bases Nitrogen bases 1. adenine 1. adenine 2. thymine 2. thymine 3. guanine 3. guanine 4. cytosine 4. cytosine pairs Adenine only pairs with thymine. Example: (A+T = AT) or (T+A + TA) Guanine only pairs with cytosine. Example: (C+G = CG) or (G+C = GC) FYI – Each new DNA molecule will be an exact duplicate of the original DNA molecule. FYI – Each new DNA molecule will be an exact duplicate of the original DNA molecule. Replication process Step 1 – The two sides of DNA unwind and seperate Example: like a zipper unzipping Step 2 – Floating nitrogen bases line up. Example: TA, AT, CG, & GC Step 3 – Bases attach to each other and 2 new DNA molecules are formed. Example: like a zipper zipping up again Summary:

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