Chapter 8: From DNA to Proteins

DNA as the Genetic Material

(Main Idea: Avery identifies DNA as the transforming principle.)




Launch the Interactive to zoom in from a whole body to a single nucleotide.

(Main Idea: DNA is composed of four types of nucleotides.)



DNA Structure

Interactive tutorial describing how Watson and Crick developed their model of DNA structure

(Main Idea: Watson and Crick developed an accurate model of DNA’s three-dimensional structure.)



Watson Video

Video in which Watson discusses the pairing of nucleotides

(Main Idea: Nucleotides always pair in the same way.)



Base Pairing

Game in which you correctly pair as many nucleotides as you can while single strands of DNA scroll up the screen, then guess which organism the DNA came from

(Main Idea: Nucleotides always pair in the same way.)



Origami DNA Model

Origami DNA template that you can print and fold into a double helix

(Main Idea: Nucleotides always pair in the same way.)




Animation showing the process of DNA replication

(Main Idea: Proteins carry out the process of replication.)



Transcription and Translation

Simulation in which you transcribe and translate a gene to produce a protein

(Main Ideas: RNA carries DNA’s instructions. Amino acids are coded by mRNA base sequences. Amino acids are linked to become a protein.)



Lac Operon

Animation showing how the lac operon functions to control the expression of proteins

(Main Idea: Prokaryotic cells turn genes on and off by controlling transcription.)



Gene Expression and Regulation

Video featuring the work of researcher Sean Carroll, who explains how two species of fruit flies can have the same genes but different phenotypes

(Main Idea: Eukaryotic cells regulate gene expression at many points.)




Interactive exhibit in which you can click through the chromosomes of corn to see how altered phenotypes caused by mutations have revealed the functions of many of its genes

(Main Idea: Mutations may or may not affect phenotype.)