Cold Spring Harbor Laboratory
Dna From the Beginning: Genes Come in Pairs
This animated lesson will explain how genes are inherited in pairs, one from the mother and one from the father.
Cold Spring Harbor Laboratory
Dna From the Beginning: Some Genes Are Dominant
Learn about the principle of dominance as you watch animations showing Mendel's experiments with pea plants. Find out what happened when he crossed plants that produced green seeds with those that produced yellow seeds.
Cold Spring Harbor Laboratory
Dna From the Beginning: Genetic Inheritance Follows Certain Rules
Find out what happened when Mendel crossed two hybrid pea plants. The animations do a good job explaining why these crosses produce a 3:1 ratio of traits.
Cold Spring Harbor Laboratory
Dna From the Beginning: Sex Linked Hemophilia in the Royal Romanov Family
An animated pedigree clearly explains the way hemophilia was inherited in the Romanov family. Interpreting pedigrees and sex-linked crosses should be much easier to understand after going through this tutorial.
Cold Spring Harbor Laboratory
Dna From the Beginning: Genes Can Be Turned on and Off
Two French scientists describe the research they did to figure out how bacteria turn certain genes on and off. The topic is a little involved, but the animations should help you understand the process.
Cold Spring Harbor Laboratory
Dna From the Beginning: Genes Are Real Things
Long after Gregor Mendel knew that something controlled heredity three other scientists finally put his research together with new evidence from microscopes to determine that genes do exist. This multimedia article includes animations,...
Cold Spring Harbor Laboratory
Dna From the Beginning: One Gene Makes One Protein
Early research showed that genes code for proteins. This was based on studies using mutant strains of bread mold. This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are...
Cold Spring Harbor Laboratory
Dna From the Beginning: Rna Is an Intermediary
Watson and Crick knew that there had to be some type of molecule that was important in protein synthesis. That molecule was RNA. This multimedia article includes animations, pictures, video, biographical information, and quiz questions...
Cold Spring Harbor Laboratory
Dna From the Beginning: Dna Words Are Three Letters Long
The genetic code is actually the three letter combination of bases that codes for an amino acid. This article describes the discovery of this code. Article includes animations, pictures, video, biographical information, and quiz...
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,...
Cold Spring Harbor Laboratory
Dna From the Beginning: Higher Cells Have Ancient Dna
Eukaryotic cells have separate DNA from mitochondria and chloroplasts which indicates that they were once primitive cells on their own. This multimedia article includes animations, pictures, video, biographical information, and quiz...
Cold Spring Harbor Laboratory
Dna From the Beginning: Dna Is Packaged in a Chromosome
The scientists and experiments that discovered that DNA is coiled into chromosomes are the topic of this article. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on...
Cold Spring Harbor Laboratory
Dna From the Beginning: Dna Responds to Signals
Genes are turned on and off in many ways. This article covers chemical signal transduction. Article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the...
Cold Spring Harbor Laboratory
Dna From the Beginning: Master Genes Control Body Plans
Homeobox genes are important because they determine the overall body plan for most animals. This article explains the experiments that helped scientists discover these master genes. Article includes animations, pictures, video,...
Cold Spring Harbor Laboratory
Dna From the Beginning: Development Balances Cell Growth
This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page. The topic is the study of cell division, mitosis, and cell...
Cold Spring Harbor Laboratory
Dna From the Beginning: A Genome Is an Entire Set of Genes
This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page. The topic is the human genome.
Cold Spring Harbor Laboratory
Dna From the Beginning: Living Things Share Common Genes
This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on buttons along the bottom of the page. Here you can see how common genes are evidence for common...
Cold Spring Harbor Laboratory
Dna From the Beginning: Dna Is Only the Beginning
The human genome project was established to determine the sequence of DNA bases that are found in each human cell. Understanding what the resulting proteins do is an entirely different project. This page is about how we are trying to...
Cold Spring Harbor Laboratory
Dna From the Beginning
At DNA from the Beginning, choose from classical genetics, molecules of genetics, genetic organization and control. Each concept is explained through animation, an image gallery, video interviews, biographies and links.
Cold Spring Harbor Laboratory
Dna From the Beginning: Bacteria and Viruses Have Dna Too.
Bacterial conjugation and experiments with viruses indicated that they must also contain DNA. This multimedia article includes animations, pictures, video, biographical information, and quiz questions that are accessed by clicking on...
Cold Spring Harbor Laboratory
Harlem Dna Lab: Bacterial Transformations
In this lab, students will transform E. Coli bacteria to be resistant to ampicillin and to glow green. Students will use genetic engineering techniques to insert plasmids into the bacteria. The site contains background reading,...
Cold Spring Harbor Laboratory
Biology Animation Library: Dolan Dna Learning Center
A step-by-step animation shows how introns are removed during RNA splicing.
Cold Spring Harbor Laboratory
Your Genes, Your Health: Phenylketonuria (Pku)
This interactive website, ideal for young students and visual learners, addresses the causes and treatments of phenylketonuria through a series of images, animation, and brief explanations. Included is a glossary of terms and links to...
Cold Spring Harbor Laboratory
Your Genes, Your Health: Marfan Syndrome
Learn all about Marfan Syndrome at this colorful, simple, interactive sight. Includes video options.