Cold Spring Harbor Laboratory
Genes Are Real Things
Proving microscopic structures exist is a difficult task. Learn how scientists did just that in the mid-1800s as they set out to identify the cellular structures related to genetics. The online lesson explains the collection of work that...
Cold Spring Harbor Laboratory
Genetic Inheritance Follows Rules
Rules are not meant to be broken in genetics. Scholars learn to build Punnett squares to track the inheritance of dominant and recessive traits in an interactive animation activity. Online questions help individuals reflect on their...
Cold Spring Harbor Laboratory
Some Genes Are Dominant
Dominate a lesson on genetic traits. Young scholars learn about the difference between dominant and recessive traits with an interactive lesson. An animation demonstrates Mendel's work on the inheritance of traits, and interactive...
Cold Spring Harbor Laboratory
Genes Don't Blend
Yellow and blue make green—unless you're studying the inheritance of genetic traits. An interactive lesson explains the difference between blended traits and pure traits and gives examples of their occurrence. The resource includes a...
Cold Spring Harbor Laboratory
Genes Come in Pairs
Mendel was the first to look at individual traits within a species. Step in his shoes as an interactive lesson takes users through his journey. An animation describes the design of his experiments and how he isolated individual traits to...
Cold Spring Harbor Laboratory
Children Resemble Their Parents
Gregor Mendel's work revolutionized agriculture from an art to a science. Explore Mendel's work with an interactive lesson that includes animations, video, and practice problems. The instruction describes the early discoveries that...
Cold Spring Harbor Laboratory
RNA Is an Intermediary Between DNA and Protein
For years, scientists believed tRNA was junk left over from larger RNA. Three scientists used different approaches to prove tRNA actually exists as the connection between DNA and protein. Learn about their experiments, their lives, and...
Cold Spring Harbor Laboratory
A Half DNA Ladder Is a Template for Copying the Whole
The experiment known as one of the most beautiful experiments in biology changed the way we think about DNA. Learn about the experiment and the scientists who designed it—as well as the scientists who built on the results—with an online...
Cold Spring Harbor Laboratory
The DNA Molecule Is Shaped like a Twisted Ladder
One of the first models of DNA appeared to be a triple helix. Young scientists learn about the many scientists who worked to find the shape of DNA. They observe multiple models, tests, and experiments to understand the conclusions. An...
Cold Spring Harbor Laboratory
Bacteria and Viruses Have DNA Too
In the 1940s, scientists discovered bacteria conjugation, the process of DNA transfer or bacterial sex. The discovery proved that bacteria and viruses contain DNA and led to a Nobel prize. Interested individuals learn about the...
Cold Spring Harbor Laboratory
One Gene Makes One Protein
Very few universities still offer a master's degree in the ecology of grasses, but that was the degree that led George Wells Beadle to an interest in genetics and later a Nobel Prize. Scholars learn about the discoveries of Dr. Beadle...
Cold Spring Harbor Laboratory
DNA and Proteins Are Key Molecules of the Cell Nucleus
When DNA research first began, it required almost an entire day to extract the molecules from a cell nucleus. Now it requires less than an hour. Scholars learn about the early theories of DNA with an online interactive, videos,...
Cold Spring Harbor Laboratory
Mendelian Genetics Cannot Fully Explain Human Health and Behavior
The breakthrough of Mendelian genetics solved many puzzles for biologists. Then, scientists decided to apply the theory to human behavior. Learn the story and struggle of finding a genetic explanation for hobbies, interests, and mental...
Cold Spring Harbor Laboratory
Mendelian Laws Apply to Human Beings
Why are so many inherited diseases more prevalent in populations of specified races? Scholars learn about pedigrees and genetics using a reading, an animation, primary sourced letters, a short video, a biography, a guided practice...
Cold Spring Harbor Laboratory
A Gene Is a Discrete Sequence of DNA Nucleotides
Frederick Sanger won two Nobel prizes for protein sequencing and DNA sequencing. Young scientists learn about Dr. Sanger's research and amazing discoveries. They read an article and a biography, view videos and animations, and apply...
Cold Spring Harbor Laboratory
DNA Words Are Three Letters Long
DNA writes 64 different words but only codes for 20 different amino acids. Budding scientists learn about where each of these numbers come from and why they aren't equal with an online interactive. The resource explains the research, the...
Cold Spring Harbor Laboratory
3D Brain
Imagine being able to rotate the brain and view interior structures without dissection! This tool allows anatomy masters to do just that. They also learn about the associated functions, disorders, and symptoms of damage to each structure.