Learn about the role of the chemical groups on the ends of the pre-mRNA called the 5' cap and poly-A tail. Also learn about splicing, introns, and exons.

Very good description of the process of translation with a good graphic to go along with it. Includes a chart classifying all of the RNA Codons.

RNA, the genetic messenger, makes sure the DNA recipe gives your cells exactly what they ordered. But sometimes that means inhibiting some other RNA that got the recipe wrong. This process is called RNA interference (RNAi), and it acts...

Get an in-depth look at the importance of DNA with this library of information on nucleic acid structure and function. Understand the structure and function of DNA by exploring topics in the chemical structure of DNA, organization of DNA...

Find out about the process of transcription, where the DNA sequence of a gene is transcribed to make an RNA molecule.

A good Access Excellence site with an introduction to the processes of transcription and translation, leading to a student modeling activity.

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.

This animation demonstrates the process of RNA translation that ultimately results in a new protein. [2:04]

Learn about a major function of cells, protein synthesis. Find out about the process in which cells manufacture this biochemical compound.

Dr. Eric Lander of the Human Genome Project explains the use of DNA as forensic evidence. He describes the process and need for standards in testing laboratories and discusses the use of DNA evidence as a human rights tool.

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.

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....