This film explores how life recovered after an asteroid wiped out the dinosaurs and how those events shaped the diversity of plants and mammals on Earth today.

In this activity, students explore using CRISPR-Cas9 to knock out butterfly genes in order to determine their function. 

In this hands-on activity, students build a paper model to explore how CRISPR-Cas9 is used to edit genes.

In this activity, students build a paper model of DNA and use their model to explore key structural features of the DNA double helix. This activity can be used to complement the short film The Double Helix.

This activity explores an image of tattoo ink particles inside cells, which serves as a phenomenon for learning about the structure and color of human skin.

This animation shows how mutations in an ion channel protein lead to the genetic disease cystic fibrosis. The animation also discusses how research on this protein has been used to develop treatments for the disease.

This interactive module explores how CRISPR-Cas9 technology works and the many ways in which scientists are using it in their research.

In this hands-on activity, students review the steps of eukaryotic gene expression and learn how this knowledge can be used to treat different genetic conditions. The activity reinforces concepts covered in the Click & Learn “Central Dogma and Genetic Medicine.”

This interactive module uses the central dogma as a model for exploring how modern molecular biology technologies can be used to treat different genetic conditions.

This activity explores images of plant cells and structures, which serve as phenomena for learning about how plants respond to stimuli.

This activity allows students to model how the anti-HIV drug AZT (azidothymidine) interferes with the process of viral replication.

In this hands-on activity, students model how a double-stranded DNA copy of the HIV genome is integrated into the host cell DNA.