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DNA Replication. VACHS BIOLOGY. Today’s Question : When a mutation occurs in one strand of DNA, can it spread to other strands? . DNA Structure. Review : 1. DNA has a double-helix shape 2. The outside pieces are called a “phosphate backbone.” 3. The inside pieces are called “base pairs.”

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dna replication

DNA Replication

VACHS BIOLOGY

slide2

Today’s Question:

When a mutation occurs in one strand of DNA, can it spread to other strands?

dna structure
DNA Structure

Review:

1. DNA has a double-helix shape

2. The outside pieces are called a “phosphate backbone.”

3. The inside pieces are called “base pairs.”

WHAT ARE THE FOUR BASE PAIRS?!?!?!

dna base pairs
DNA BASE PAIRS

ADENINE and THYMINE

GUANINEand CYTOSINE

assign each table group a role
ASSIGN EACH TABLE GROUP A ROLE:

DNA HELICASE (1 person):

Responsible for retrieving and unzipping the original strand!

DNA POLYMERASE (2 people):

Responsible for retrieving new base pairs and creating the complementary (new) strands!

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