CPALMS
Florida State University Cpalms: Florida Students: The Universal Genetic Code
Explore DNA in this tutorial. Learn about its structure, function, and why it is considered the universal code.
PBS
Pbs Learning Media: Genetic Variation
This video segment from NOVA: "Cracking the Code of Life" explores the genetic similarities and differences among organisms.
Biotechnology Institute
Biotechnology Institute: Your World: Cracking the Code of Life [Pdf]
The Biotechnology Institute, in conjunction with a special titled, "Cracking the Code of Life" from NOVA/WGBH television, presents this issue dedicated to explorations of the human genome, one of the most exciting and provocative areas...
Cold Spring Harbor Laboratory
Dolan Dna Learning Center: Transcription Translation: Central Dogma of Biology
This animation shows how the DNA genetic code leads to proteins that help us develop and function. [2:51]
National Health Museum
Nhm: Amino Acid Sequences Show Evolution
This lesson plan focuses on differences in the amino acid sequence of hemoglobin and myoglobin proteins. They use the number of differences to create a phylogenetic tree.
PBS
Pbs Learning Media: Journey Into Dna
Travel deep into the human body to see exactly where your DNA resides. From the NOVA: Cracking the Code of Life Web site.
BiologyWise
Biology Wise: Start Codon
A start codon is a nucleotide triplet in a genetic sequence that occurs at the start of a protein's synthesis. Read about how this works and how a mutation can sometimes occur.
Estrella Mountain Community College
Estrella Mountain Community College: Protein Synthesis
A look at protein synthesis in words and pictures. This website discusses the processes of replication, transcription, and translation. Also covered is Beadle and Tatum research that explains that one gene codes for one polypeptide....
BiologyWise
Biology Wise: What Is a Stop Codon?
A stop codon is a nucleotide triplet in messenger RNA that signals the end of a protein during the translation process. Read about how this works, the different types of stop codons, and how a mutation can sometimes occur.