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In this Click & Learn, students explore the process of digestion and how it connects to metabolism and cellular respiration. 

Several questions are embedded within the short film The Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture, which explores the genetics of lactase persistence and evolution of the trait in some human populations.

This interactive module traces the evolutionary history of birds by comparing the bone structures of a chicken to those of other species.

This animation shows how disrupting cellular processes in the intestines can lead to colon cancer.

This film explores the adaptation of anole lizards (genus Anolis) to habitats common across the islands of the Caribbean. The anoles are excellent examples of adaptive radiation, convergent evolution, and speciation through reproductive isolation.

This film explores the genetics and evolution of lactase persistence in humans.

This interactive module shows how DNA sequences can be used to infer evolutionary relationships among organisms and represent them as phylogenetic trees.

This animation shows how human infants can digest milk using the enzyme lactase.

This interactive module allows students to compare the morphological characteristics of seashells and construct an evolutionary tree.

This tutorial explores how fat is digested, transported, stored, and used for energy.

This tutorial describes the various forms of “fat” — from a tissue, to a cell type, to a class of molecules.

This animation shows how the PPAR-gamma receptor can activate fat storage and changes in hormone levels.