This mini-lesson covers the research on telomeres that has happened since the 1995 Holiday Lectures.
Finches discriminate between members of their own species and those of a closely related species based on song and appearance.
This interactive explores different anatomical features of the human body and what they reveal about the evolutionary history we share with other organisms, including earlier, long-extinct species.
The fossils of transitional creatures were key evidence for Darwin’s evolutionary theory, but none had been found when he published On the Origin of Species. Now, there are many examples of such fossils, which clearly show that big evolutionary leaps consist of many smaller steps.
A highly visual interactive timeline for exploring the history of Gorongosa National Park, from its beginnings as a hunting reserve and decline in the wake of a civil war, to its return to being one of the world’s foremost wildlife treasures and case studies in conservation biology.
This interactive map of Gorongosa National Park allows users to explore different features of the park, including key components of the conservation strategy.
This survey, developed by Horne and Ostberg, will let you determine if you are a morning or an evening person.
Understand how quorum sensing works by reasoning through experiments involving genetically-engineered bioluminescent bacteria.
This Click and Learn describes how understanding the structure of the BCR-ABL kinase led to the development of an effective treatment for chronic myeloid leukemia.
An overview of the immune system, concentrating on the roles played by B and T lymphocytes, and the antigen-presentation system.
This Click and Learn explains how DNA sequences can be used to generate such trees, and how to interpret them.
The record of life on Earth stretches over 3 billion years. Deep time and Earth history are keys to understanding the present.
Learn the principles of how DNA is sequenced and assembled into whole genomes using the Sanger method, shotgun sequencing, or ultra-deep sequencing.
Problems associated with adherence to antiviral drugs, and a student activity that mimics adherence to a multi-drug regimen.
What did Earth look like 250 million years ago? Or 1 billion years ago? Or 4.5 billion years ago? EarthViewer is an interactive tool that allows you to explore the science of Earth's deep history.
To use the app version for tablets and mobile devices,...
Measuring neuronal activity, generating action potentials, and recording the firing of individual neurons.
West Nile virus infects mosquitoes, birds, and people—with very different consequences.
Learn why verifying a person's gender may be harder than you think.
Learn about how gene switches can control expression of genes in different tissues.
Explore the changes in oxygen levels throughout Earth’s history and discover their impact on life.
This slide show explores some of the ways the body processes fat, including digestion, transport, conversion, and energy extraction.
DNA microarrays, or gene chips, are an important new technology for genomic research. Learn how researchers use computing to analyze and interpret the huge datasets generated by microarray experiments.
There is no way to directly measure how much fat a living person has. Learn about the various methods used by researchers and fitness advisors to estimate a person’s body fat.
How both gene chips and microarray slides are created.
This slide show delves into the various molecular shapes that fat can take.