Khan Academy
Khan Academy: Dna Sequencing
Learn how the sequence of nucleotide bases (As, Ts, Cs, and Gs) in a piece of DNA is determined.
Cold Spring Harbor Laboratory
Dna Learning Center: Dna Molecule, Dna Unzip
The DNA double helix contains two sequences of nucleotide code letters than run along the molecule. Untwist the spiral and DNA can be seen as two parallel strands. That's why its sometimes called the double helix. Unzip the strands and...
CK-12 Foundation
Ck 12: Life Science: Transcription of Dna to Rna
[Free Registration/Login may be required to access all resource tools.] DNA is located in the nucleus. Proteins are made on ribosomes in the cytoplasm. Remember that information in a gene is converted into mRNA, which carries the...
Khan Academy
Khan Academy: Test Prep: Mcat: Biomolecules: Dna: Dna Structure and Function
Provides detailed explanation of DNA's structure and function. Includes illustrations.
National Health Museum
Access Excellence: Dna Dry Lab
This lab illustrates how the order of nucleotides in DNA determines the order of amino acids in proteins. Relates DNA function to that of RNAand provides an exercise to demonstrate how mutations may occur. Includes a lesson plan and...
Science Education Resource Center at Carleton College
Serc: Genomic Dna Isolation: From Human Cheek Cells
In this lab activity students isolate genomic DNA from their own cheek cells. They then remove the DNA from those cheek cells through a laboratory process.
Estrella Mountain Community College
Online Biology Book: Dna and Molecular Genetics
Microscopic images, detailed information, and illustrated diagrams help explain DNA and molecular genetics in this college-level textbook.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is Dna?
Answers the questions what makes DNA, where is it found, what does it look like, and how does it work.
CK-12 Foundation
Ck 12: Dna Structure and Replication
[Free Registration/Login may be required to access all resource tools.] Module describes how DNA's structure and function was discovered while summarizing the process of DNA replication. This activity also explains Chargaff's rules and...
TeachEngineering
Teach Engineering: Imaging Dna Structure
Students are introduced to the latest imaging methods used to visualize molecular structures and the method of electrophoresis that is used to identify and compare genetic code (DNA). Students should already have basic knowledge of...
Cold Spring Harbor Laboratory
Dna From the Beginning: A Gene Is a Sequence of Nucleotides
Genes are actually a specific sequence of DNA and they have a clear start and stop. Learn about the discovery and sequencing of genes at this site. This multimedia article includes animations, pictures, video, biographical information,...
BiologyWise
Biology Wise: Nucleoside vs. Nucleotide
Discusses the characteristics of and differences between nucleosides and nucleotides as well as the significance of each in medicine.
Ducksters
Ducksters: Biology for Kids: Dna and Genes
On this site, students learn about DNA and genes in the science of biology including the deoxyribonucleic acid molecule, nucleotides, codons, and interesting facts.
University of Utah
University of Utah: Genetic Science Learning Center: What Causes Dna Mutations
Provides a great overview of DNA damage from agents such as ultraviolet light, nuclear radiation, and certain chemicals. Includes DNA strand drawings.
Cold Spring Harbor Laboratory
Dna From the Beginning: Classical Genetics
This article from DNA from the beginning is loaded with goodies about genetics and DNA. Starting with Mendel all the way through the concept of DNA, you will see how life is given certain characteristics. Some animations and audio clips...
BiologyWise
Biology Wise: Codon Chart
Explains the workings of the codon translation chart which provides the keys to the structure of amino acids. Includes a widget where one can input a nucleotide triplet combination and see which amino acid it represents. Includes RNA and...
Other
Digital World Biology: Blast Tutorial
A series where students see how to submit a nucleotide sequence, compare it to other sequences using blastn, and interpret some of the results.
National Health Museum
Access Excellence: Genes, Dna, and Mutations
A good Access Excellence site with an introduction to the processes of transcription and translation, leading to a student modeling activity.
Sophia Learning
Sophia: Structure of a Nucleotide: Lesson 2
This lesson will describe the structure of a nucleotide. It is 2 of 2 in the series titled "Structure of a Nucleotide."
Sophia Learning
Sophia: Structure of a Nucleotide: Lesson 1
This lesson will describe the structure of a nucleotide. It is 1 of 2 in the series titled "Structure of a Nucleotide."
New York University
Model of the Four Nucleotide Bases in Rna
The 3-D model of Cytosine (C), Uracil (U), Adenine (A), and Guanine (G), the four nucleotide bases in RNA. Requires the CHIME plug-in to view the models, or they can be viewed statically in .gif format
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Understanding Sequence Assembly
A series of lecture clips helps explain how DNA sequencing is done by using the analogy of shredding multiple copies of a book and then reassembling the text by finding overlapping fragments. The ultimate goal of DNA sequencing is to...
National Health Museum
Access Excellence: Making a Phylogenetic Tree Lesson Plan
Constructing phylogenetic trees may be a daunting task for students, but this lesson plan is a simulation of what molecular biologists must do to determine relationships. This plan is for students who have a good grasp of DNA structure...