Site Search

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

This interactive module explores how different animals — elephants, birds, and bats — have evolved distinct ways of using sound to communicate.

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.

A number of questions are embedded within the short film Popped Secret: The Mysterious Origin of Corn, which explores the genetic and archaeological evidence that corn was domesticated from a wild Mexican grass called teosinte.

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

This interactive module explores the circulatory systems of major vertebrate groups to gain insights into their evolution.

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

This tutorial describes the symbiosis between the Hawaiian bobtail squid and bioluminescent bacteria.

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

This short tutorial explores and compares the mechanisms of artificial selection and natural selection.

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.