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Unit 1:
Ch. 1
Ch. 2
Ch. 3
Interlude A
Unit 2:
Ch. 4
Ch. 5
Ch. 6
Ch. 7
Ch. 8
Ch. 9
Interlude B
Unit 3:
Ch. 10
Ch. 11
Ch. 12
Ch. 13
Ch. 14
Ch. 15
Interlude C
Unit 4:
Ch. 16
Ch. 17
Ch. 18
Ch. 19
Interlude D
Unit 5:
Ch. 20
Ch. 21
Ch. 22
Ch. 23
Ch. 24
Ch. 25
Ch. 26
Ch. 27
Ch. 28
Ch. 29
Ch. 30
Interlude E
Unit 6:
Ch. 31
Ch. 32
Interlude F
Unit 7:
Ch. 33
Ch. 34
Ch. 35
Ch. 36
Ch. 37
Ch. 38
Interlude G
The animations require the latest Flash 7 and Shockwave plug-ins.
12.1: Activity: Griffith's experiments
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Review Griffith's experiments showing that a harmless strain of R bacteria could be transformed into deadly strain S bacteria.

12.2: Tutorial: The Hershey-Chase experiment
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This tutorial explores an elegant experiment designed to test which substance—DNA or protein—was the genetic material.

12.3: Activity: Building a DNA strand
ThumbnailSimulate the process of building a new DNA strand.

12.4: Tutorial: DNA replication
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This tutorial reviews the simple base-pairing rules that allow the information in one strand of DNA to be used to generate a new strand.

12.5: Tutorial: DNA repair
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This tutorial explores how cells detect and repair replication errors.

12.1a: Process Animation: VDNA Repair: Mutations from DNA Replication
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» View animation

12.1b: Process Animation: Mutations from Sunlight
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» View animation

12.2: Process Animation: The Hershey-Chase experiment
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» View animation

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Norton Gradebook

Instructors now have an easy way to collect students’ online quizzes with the Norton Gradebook without flooding their inboxes with e-mails.

Students can track their online quiz scores by setting up their own Student Gradebook.