DNA Replication Gaiser Life Science Know Why is DNA important? Evidence Page 32 DNA Replication Explain your answer.

DNA Replication

Gaiser Life Science

KnowWhy is DNA important?

Evidence

Page 32

DNA Replication

Explain your answer.

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. adenine1. adenine 2. thymine2. thymine 3. guanine3. guanine 4. cytosine4. 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)

Clarifying ?s Information

Page 33

FYI – Each new DNA molecule will be an exact duplicate of the FYI – Each new DNA molecule will be an exact duplicate of the original DNA molecule.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 seperateExample: 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

Page 33

Clarifying ?s InformationDNA 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. adenine1. adenine 2. thymine2. thymine 3. guanine3. guanine 4. cytosine4. 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 FYI – Each new DNA molecule will be an exact duplicate of the original DNA molecule.original DNA molecule.

Replication process

Step 1 – The two sides of DNA unwind and seperateExample: 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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