Got milk? Only two cultures have had it long enough to develop the tolerance of lactose as an adult. Learn how the responsible genes evolved along with the cultures that have been consuming milk. This rich film is supplied with a few...

By counting differences in amino acids, biology stars examine the relationships between different primates. With information gleaned, they map out a phylogenic tree and discover common ancestry. You will need to create printable versions...

Are women's eggs similar to chicken eggs? Scholars compare eggs from various species to better understand embryonic development. Connections to evolution through hands-on activities help to cement the new vocabulary introduced.

Need an a-maize-ing lesson to show your class how regulatory genes work? If you use the well-written resource, they'll be all ears! Biology scholars discover the gene responsible for the evolution of the modern-day corn plant through a...

We all drink milk as babies, so why can't we all drink it as adults? Examine the trend in lactase production on the world-wide scale as science scholars analyze and interpret data. Groups create pie charts from the data, place them on a...

You may not know if that zebrafish in your fish tank is a model citizen—but it is definitely a model organism! What can we learn about ourselves from a tiny zebrafish? Discover more about the polygenic trait of skin color through a...